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{{Spoilers}}
 
 
{{Villain Infobox
 
{{Villain Infobox
 
|image = <gallery>
 
|image = <gallery>
 
Church of Seiros.png|Divine
 
Church of Seiros.png|Divine
Seiros portrait.png|Physical
+
Seiros.png|Physical
Rhea Portrait.png|Rhea
+
RheaFE.png|Rhea
The Immaculate One.jpg|Dragon
+
The Immaculate One.jpg|Immaculate One
 
</gallery>
 
</gallery>
  +
|size = 200
 
|fullname = Seiros
 
|fullname = Seiros
 
|alias = Rhea<br>
 
|alias = Rhea<br>
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Use Byleth as a vessel of Sothis.
 
Use Byleth as a vessel of Sothis.
 
|crimes = Arson<br>
 
|crimes = Arson<br>
Warmonging<br>
 
Deception<br>
 
 
Fanatical propaganda
 
Fanatical propaganda
|type of villain = Fanatic Deity
+
|type of villain = Fanatical Deity}}
 
{{Quote|So, this is the choice you have made. You are just another failure. Your presence soils this Holy Tomb and disgraces my brethren. I will not allow one who would lend our enemies strength to wield the power of the goddess Sothis! I have passed judgement! And now, I shall now rip your chest open, and '''TAKE BACK YOUR HEART MYSELF!'''|Rhea's [[w:c:evil:Villainous Breakdown|Breakdown]] upon seeing Byleth side with Edelgard.}}
}}
 
 
{{Quote|I have no patience for foolish questions. I shall sacrifice as many lives as it takes! That apostate who insists on taking everything from me '''WILL BE CRUSHED BY MY OWN HANDS!'''|Rhea/Seiros to Catherine regarding Byleth.}}
{{Quote|So, this is the choice you have made. You are just another failure. Your presence soils this Holy Tomb and disgraces my brethren. I will not allow one who would lend our enemies strength to wield the power of the goddess Sothis! I have passed judgement! And now, I shall now rip your chest open, and '''TAKE BACK YOUR HEART MYSELF!'''|Rhea's [[w:c:evil:Villainous Breakdown|Breakdown]] upon seeing Byleth side with Edelgard (Crimson Flower route)}}
 
  +
{{Quote|'''NONSENSE!''' Fools who do not accept their own sins are undeserving of salvation! You humans are the ones who betrayed! You betrayed me, and you betrayed my mother!|The Immaculate One fighting [[Flame Emperor|Edelgard]].}}
{{Quote|I have no patience for foolish questions. I shall sacrifice as many lives as it takes! That apostate who insists on taking everything from me '''WILL BE CRUSHED BY MY OWN HANDS!!!'''|Rhea/Seiros to Catherine regarding Byleth(Crimson Flower route)}}
 
   
'''Seiros''', also known as '''Rhea''' and the '''Immaculate One''', is the deuteragonist in the overall ''Fire Emblem: Three Heroes'', serving as the founder, patron deity and Archbishop of the [[Church of Seiros]].
+
'''Seiros''', also known as '''Rhea''' and the '''Immaculate One''', is a major supporting character and antagonist in ''Fire Emblem: Three Houses'', serving as the founder, patron deity and Archbishop of the [[Church of Seiros]].
   
 
Because of her important role in the story, especially along with her own questionable motives and her descent into villainy in the Black Eagle route, Seiros can be considered as one of the two secondary antagonists (alongside the [[Flame Emperor]]) in the overall game as well.
 
Because of her important role in the story, especially along with her own questionable motives and her descent into villainy in the Black Eagle route, Seiros can be considered as one of the two secondary antagonists (alongside the [[Flame Emperor]]) in the overall game as well.
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She serves as the deuteragonist in the Acadamy Phase (as Rhea) pre-timeskip, though with questionable motives. In the War Phase post-timeskip, she serves as either an alluded character or a supporting character in most of the routes, being the deuteragonist (and the final boss after she goes berserk) in the Church route, a mentioned character in the Blue Lion route, and a major character in the Golden Deer route.
 
She serves as the deuteragonist in the Acadamy Phase (as Rhea) pre-timeskip, though with questionable motives. In the War Phase post-timeskip, she serves as either an alluded character or a supporting character in most of the routes, being the deuteragonist (and the final boss after she goes berserk) in the Church route, a mentioned character in the Blue Lion route, and a major character in the Golden Deer route.
   
However, in the Black Eagle route, Rhea gradually descends into madness if Byleth choose to defy her and side with Edelgard, who was revealed to be the [[Flame Emperor]]. She becomes obsessed with killing Byleth and recovering the Crest Stone within their heart, becoming the main antagonist for the remainder of the game.
+
However, in the Crimson Flower route, Rhea gradually descends into madness after Byleth chooses to defy her and side with Edelgard, who was revealed to be the [[Flame Emperor]]. She becomes obsessed with killing Byleth and recovering the Crest Stone within their heart, becoming the main antagonist of the second half of the game.
   
She is voiced by Kikuko Inoue in Japanese version and by Cherami Leigh in English version.
+
She is voiced by {{w|Kikuko Inoue}} in the Japanese version and by {{w|Cherami Leigh}} in the English version.
   
 
<u>'''''NOTE: This page is only for Rhea/Seiros in the Black Eagle route, particularly its Crimson Flower segment, which is the only route where she serves as a villain.'''''</u>
 
<u>'''''NOTE: This page is only for Rhea/Seiros in the Black Eagle route, particularly its Crimson Flower segment, which is the only route where she serves as a villain.'''''</u>
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According to the Church's legend, Seiros is the founder of the Church of Seiros, which named after her. It is said she received a revelation from the Goddess that was a "gift to guide the lost." However, the myth of the Church is a deliberate partial distortion of real history. Seiros was not a normal human in fact, but a member of the Nabatean race, the children of the Goddess Sothis, who lived in Zanado, the Red Canyon, before Sothis was betrayed and murdered by [[Nemesis (Fire Emblem)|Nemesis]], a former guardian of Seiros who became a bandit after being corrupted by [[Those Who Slither in the Dark]]. Those Who Slither in the Dark forged the Sword of the Creator from Sothis' bones, which Nemesis then used to commit genocide against the Nabateans, whose bones were also forged into weapons by Those Who Slither in the Dark.
 
According to the Church's legend, Seiros is the founder of the Church of Seiros, which named after her. It is said she received a revelation from the Goddess that was a "gift to guide the lost." However, the myth of the Church is a deliberate partial distortion of real history. Seiros was not a normal human in fact, but a member of the Nabatean race, the children of the Goddess Sothis, who lived in Zanado, the Red Canyon, before Sothis was betrayed and murdered by [[Nemesis (Fire Emblem)|Nemesis]], a former guardian of Seiros who became a bandit after being corrupted by [[Those Who Slither in the Dark]]. Those Who Slither in the Dark forged the Sword of the Creator from Sothis' bones, which Nemesis then used to commit genocide against the Nabateans, whose bones were also forged into weapons by Those Who Slither in the Dark.
   
Traumatized and embittered, Seiros became distrustful and vengeful towards humans, blaming Nemesis' hunger for power and subsquent treachery for a consequence out of human nature. She became obsessed with reviving Sothis and returning the the happiness of her childhood.
+
Traumatized and embittered, Seiros became distrustful and vengeful towards humans, blaming Nemesis' hunger for power and subsequent treachery for a consequence out of human nature. She became obsessed with reviving Sothis and returning the happiness of her childhood.
   
 
===War of Heroes===
 
===War of Heroes===
 
To exact her revenge against Nemesis, in Imperial Year 91, Seiros formed an alliance with one of Nemesis' allies, Wilhelm, by sharing her blood with him, giving him the Crest of Seiros. With the combined forces of herself, Wilhelm and the survivors of the Red Canyon, the Four Saints, Seiros led the battle against Nemesis and the Ten Elites, killing him in hand-in-hand combat at the Tailtean Plains.
 
To exact her revenge against Nemesis, in Imperial Year 91, Seiros formed an alliance with one of Nemesis' allies, Wilhelm, by sharing her blood with him, giving him the Crest of Seiros. With the combined forces of herself, Wilhelm and the survivors of the Red Canyon, the Four Saints, Seiros led the battle against Nemesis and the Ten Elites, killing him in hand-in-hand combat at the Tailtean Plains.
   
After the War of Heroes, Seiros founded the Church and established the Adrestian Empire, crowning Wilhelm as its first emperor. She then proceeded to rewrite history, claiming that the Crests were gifts from the Goddess to humanity, that the Ten Elites were her devout followers, obscuring Nemesis' original past and only leaving intact that he was a hero who fell from grace. She also claimed that the weapons forged from Nabatean bones were "Heroes' Relics" gifted to humanity by the goddess, in order the hide their ture nature from the people
+
After the War of Heroes, Seiros founded the Church and established the Adrestian Empire, crowning Wilhelm as its first emperor. She then proceeded to rewrite history, claiming that the Crests were gifts from the Goddess to humanity, that the Ten Elites were her devout followers, obscuring Nemesis' original past and only leaving intact that he was a hero who fell from grace. She also claimed that the weapons forged from Nabatean bones were "Heroes' Relics" gifted to humanity by the goddess, in order the hide their true nature from the people
   
 
After the establishment of the Church, Seiros began her endeavor to revive Sothis, using the Church to control Fódlan from the shadows, eliminating any who would oppose her.
 
After the establishment of the Church, Seiros began her endeavor to revive Sothis, using the Church to control Fódlan from the shadows, eliminating any who would oppose her.
  +
 
===Becoming Rhea===
 
===Becoming Rhea===
 
As Nabateans have a longer life span than humans, Seiros faked her death and continued to control the Church from behind the scenes. A thousand years later, she assumed the alias of Rhea and once again assumed direct control of the Church while continuing to advance her plans. As Rhea had shared her blood with Jeralt to save his life, she also used the Crest of Flames to revive a newly born Byleth, implanting its Crest Stone in his heart when he was a baby. Seiros believed that Byleth would be the perfect vessel for the Goddess.
 
As Nabateans have a longer life span than humans, Seiros faked her death and continued to control the Church from behind the scenes. A thousand years later, she assumed the alias of Rhea and once again assumed direct control of the Church while continuing to advance her plans. As Rhea had shared her blood with Jeralt to save his life, she also used the Crest of Flames to revive a newly born Byleth, implanting its Crest Stone in his heart when he was a baby. Seiros believed that Byleth would be the perfect vessel for the Goddess.
   
However, Jeralt grew suspicious of Rhea due to the circumstances of his wife's death and Byleth's condition, who had a pulse but no heartbeat. Losing his faith in Rhea after believing his wife died of something else, Jeralt faked his and Byleth's deaths and left the Knights of Seiros with his child, being forced to return many years later after being discovered by Dimitri, Edelgard, Claude and Alois. In the years following Jeralt's disappearance, two of the Four Saints, Cihol and his daughter Cethleann, joined Rhea at Garreg Mach Monastary, taking the names Seteh and Flayn respectively and masquerading as brother and sister.
+
However, Jeralt grew suspicious of Rhea due to the circumstances of his wife's death and Byleth's condition, who had a pulse but no heartbeat and never cried. Losing his faith in Rhea after believing his wife died of something else, Jeralt faked his and Byleth's deaths and left the Knights of Seiros with his child, being forced to return many years later after being discovered by Dimitri, Edelgard, Claude and Alois. In the years following Jeralt's disappearance, two of the Four Saints, Cihol and his daughter Cethleann, joined Rhea at Garreg Mach Monastary, taking the names Seteh and Flayn respectively and masquerading as brother and sister.
   
 
===Black Eagle (Crimson Flower)===
 
===Black Eagle (Crimson Flower)===
 
<u>'''''Note: This route can only be achieved by choosing the Black Eagle, attending Edelgard's ascension ceremony in time and choosing to spare her.'''''</u>
 
<u>'''''Note: This route can only be achieved by choosing the Black Eagle, attending Edelgard's ascension ceremony in time and choosing to spare her.'''''</u>
   
After Byleth chooses to defend Edelgard instead of killing her, Rhea grows furious with Byleth, transforming into her true form: The Immaculate One. Before she can finish them off, though, they flee. After the Adrestrian Empire and the Black Eagles succesfully storm Garreg Mach Monastery, she transforms again and attacks Byelth. Byleth goes missing for five years and, unlike other routes, Rhea is not captured. In those five years, Rhea and the Church of Seiros are granted asylum within the Holy Kingdom of Faerghus by the newly crowned King Dimitri, forming and alliance with him against Edelgard and the empire.
+
After Byleth chooses to defend Edelgard instead of killing her, Rhea grows furious with Byleth, transforming into her true form: The Immaculate One. Before she can finish them off, though, they flee. After the Adrestrian Empire and the Black Eagles successfully storm Garreg Mach Monastery, she transforms again and attacks Byelth. Byleth goes missing for five years and, unlike other routes, Rhea is not captured. In those five years, Rhea and the Church of Seiros are granted asylum within the Holy Kingdom of Faerghus by the newly crowned King Dimitri, forming an alliance with him against Edelgard and the empire and figting them to a standstill.
   
She slips further down into madness and revenge over Byleth's betrayal and eventually chooses to discard her alias as Rhea and just be called Seiros again. While Edelgard and the Black Eagle Strike Force capture what is left of the Leicester Alliance and either kill or exile Claude, Rhea plans an assault to recapture the Monastery in their absence, with Seteth and Flayn appearing in the battle. If fought by Byleth, Seteth notes that even he can't follow Rhea/Seiros' course anymore, despite being her advisor for so many years. They can be spared if defeated by Byleth, after which the two will go into hiding. In this scenario, Seteth will send Seiros a letter after the battle, explaining that while he despises Byleth for their betrayel, he prioritises Flayn's safety above all else. Regardless of the outcome, Seiros becomes even more furious at Byleth for taking them away from her as well.
+
She slips further down into madness and revenge over Byleth's betrayal and eventually chooses to discard her alias as Rhea and just be called Seiros again. While Edelgard and the Black Eagle Strike Force capture what is left of the Leicester Alliance and either kill or exile Claude, Rhea plans an assault to recapture the Monastery in their absence, with Seteth and Flayn appearing in the battle. If fought by Byleth, Seteth notes that even he can't follow Rhea/Seiros' course anymore, despite being her advisor for so many years. They can be spared if defeated by Byleth, after which the two will go into hiding. In this scenario, Seteth will send Seiros a letter after the battle, explaining that while he despises Byleth for their betrayal, he prioritises Flayn's safety above all else. Regardless of the outcome, Seiros becomes even more furious at Byleth for taking them away from her as well.
   
She appears alongside Dimitri in the penultimate chapter as an optional enemy commander, hoping to intercept the Imperial army on their way to conquer Fhirdiad, the capital of Faerghus. Seiros is, of course, defeated and retreats. As the Imperial army nears Fhirdiad, she orders Catherine to torch the city, disregarding the civilians still residing there; Catherine initially objects, but reluctantly agrees. For the final battle, Seiros transforms into The Immaculate One once again and fights the Empire out of blind hatred. Upon her defeat, Byleth and Edelgard strike her down once and for all, causing Byleths' Crest of Flames to dissapear and their hair and eyes to return to normal, and their heart to start beating for the first time in their life.
+
She appears alongside Dimitri in the penultimate chapter as an optional enemy commander, hoping to intercept the Imperial army on their way to conquer Fhirdiad, the capital of Faerghus. Seiros is, of course, defeated and retreats. As the Imperial army nears Fhirdiad, she orders Catherine to torch the city, disregarding the civilians still residing there; Catherine initially objects, but reluctantly agrees. For the final battle, Seiros transforms into The Immaculate One once again and fights the Empire out of blind hatred. Upon her defeat, Byleth and Edelgard strike her down once and for all, causing Byleths' Crest of Flames to disappear and their hair and eyes to return to normal, and their heart to start beating for the first time in their life.
   
 
==Other Media==
 
==Other Media==
 
===''Super Smash Bros. Ultimate''===
 
===''Super Smash Bros. Ultimate''===
In Super Smash Bros. Ultimate, Seiros in her Rhea form both appears as a background fighter in the Garreg Mach Monastery stage and as one of Byleth's DLC spirits.
+
In ''Super Smash Bros. Ultimate'', Seiros in her Rhea form both appears as a background character in the Garreg Mach Monastery stage and as one of Byleth's DLC spirits. As a spirit, she is an Ace level spirit under the Neutral type. In her spirit battle, the fight is set to being a stamina match on Bridge of Eldin, with the player first required to beat a Palutena, then a giant white Charizard. When equipped, she grants stronger magic attacks.
   
 
==Gallery==
 
==Gallery==
 
<gallery captiontextcolor="#27bb0a" bordercolor="#ffffff" position="center" widths="300">
 
<gallery captiontextcolor="#27bb0a" bordercolor="#ffffff" position="center" widths="300">
  +
Fire Emblem Three Houses Seiros cinematic.webp.jpg
Fire_Emblem_Three_Houses_Seiros_cinematic.webp.jpg|Seiros during the War of Heroes
 
  +
Seiros portrait.png
Portrairt_FE16_Immaculate_One.png|Rhea as the Immaculate One
+
Portrairt FE16 Immaculate One.png|Rhea as the Immaculate One.
Seiros_headshot.png
 
  +
Seiros headshot.png
Seiros_battle_model.jpg|Rhea's battle model as a Saint
+
Seiros battle model.jpg|Rhea's battle model as a Saint.
Edelgard_ending.png|Rhea in her final moments (Crimson Flower)
 
  +
Rhea Portrait.png
 
Edelgard ending.png|Rhea in her final moments (Crimson Flower).
 
</gallery>
 
</gallery>
   
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==Navigation==
 
==Navigation==
 
{{Fire Emblem Villains}}
 
{{Fire Emblem Villains}}
  +
{{Super Smash Bros. Villains}}
 
[[Category:Deities]]
 
[[Category:Deities]]
 
[[Category:Fanatics]]
 
[[Category:Fanatics]]
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[[Category:Affably Evil]]
 
[[Category:Affably Evil]]
 
[[Category:Psychotic]]
 
[[Category:Psychotic]]
[[Category:Mentally Ill]]
 
 
[[Category:In Love]]
 
[[Category:In Love]]
 
[[Category:Status Dependent upon Player Choice]]
 
[[Category:Status Dependent upon Player Choice]]
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[[Category:Hypocrites]]
 
[[Category:Hypocrites]]
 
[[Category:Dragons]]
 
[[Category:Dragons]]
[[Category:Elementals]]
 
 
[[Category:Magic]]
 
[[Category:Magic]]
 
[[Category:Leader]]
 
[[Category:Leader]]
 
[[Category:Siblings]]
 
[[Category:Siblings]]
[[Category:Master Manipulator]]
 
 
[[Category:Mastermind]]
 
[[Category:Mastermind]]
 
[[Category:Grey Zone]]
 
[[Category:Grey Zone]]

Revision as of 19:36, 26 June 2020

So, this is the choice you have made. You are just another failure. Your presence soils this Holy Tomb and disgraces my brethren. I will not allow one who would lend our enemies strength to wield the power of the goddess Sothis! I have passed judgement! And now, I shall now rip your chest open, and TAKE BACK YOUR HEART MYSELF!
~ Rhea's Breakdown upon seeing Byleth side with Edelgard.
I have no patience for foolish questions. I shall sacrifice as many lives as it takes! That apostate who insists on taking everything from me WILL BE CRUSHED BY MY OWN HANDS!
~ Rhea/Seiros to Catherine regarding Byleth.
NONSENSE! Fools who do not accept their own sins are undeserving of salvation! You humans are the ones who betrayed! You betrayed me, and you betrayed my mother!
~ The Immaculate One fighting Edelgard.

Seiros, also known as Rhea and the Immaculate One, is a major supporting character and antagonist in Fire Emblem: Three Houses, serving as the founder, patron deity and Archbishop of the Church of Seiros.

Because of her important role in the story, especially along with her own questionable motives and her descent into villainy in the Black Eagle route, Seiros can be considered as one of the two secondary antagonists (alongside the Flame Emperor) in the overall game as well.

She serves as the deuteragonist in the Acadamy Phase (as Rhea) pre-timeskip, though with questionable motives. In the War Phase post-timeskip, she serves as either an alluded character or a supporting character in most of the routes, being the deuteragonist (and the final boss after she goes berserk) in the Church route, a mentioned character in the Blue Lion route, and a major character in the Golden Deer route.

However, in the Crimson Flower route, Rhea gradually descends into madness after Byleth chooses to defy her and side with Edelgard, who was revealed to be the Flame Emperor. She becomes obsessed with killing Byleth and recovering the Crest Stone within their heart, becoming the main antagonist of the second half of the game.

She is voiced by Kikuko Inoue in the Japanese version and by Cherami Leigh in the English version.

NOTE: This page is only for Rhea/Seiros in the Black Eagle route, particularly its Crimson Flower segment, which is the only route where she serves as a villain.

Biography

Origin

According to the Church's legend, Seiros is the founder of the Church of Seiros, which named after her. It is said she received a revelation from the Goddess that was a "gift to guide the lost." However, the myth of the Church is a deliberate partial distortion of real history. Seiros was not a normal human in fact, but a member of the Nabatean race, the children of the Goddess Sothis, who lived in Zanado, the Red Canyon, before Sothis was betrayed and murdered by Nemesis, a former guardian of Seiros who became a bandit after being corrupted by Those Who Slither in the Dark. Those Who Slither in the Dark forged the Sword of the Creator from Sothis' bones, which Nemesis then used to commit genocide against the Nabateans, whose bones were also forged into weapons by Those Who Slither in the Dark.

Traumatized and embittered, Seiros became distrustful and vengeful towards humans, blaming Nemesis' hunger for power and subsequent treachery for a consequence out of human nature. She became obsessed with reviving Sothis and returning the happiness of her childhood.

War of Heroes

To exact her revenge against Nemesis, in Imperial Year 91, Seiros formed an alliance with one of Nemesis' allies, Wilhelm, by sharing her blood with him, giving him the Crest of Seiros. With the combined forces of herself, Wilhelm and the survivors of the Red Canyon, the Four Saints, Seiros led the battle against Nemesis and the Ten Elites, killing him in hand-in-hand combat at the Tailtean Plains.

After the War of Heroes, Seiros founded the Church and established the Adrestian Empire, crowning Wilhelm as its first emperor. She then proceeded to rewrite history, claiming that the Crests were gifts from the Goddess to humanity, that the Ten Elites were her devout followers, obscuring Nemesis' original past and only leaving intact that he was a hero who fell from grace. She also claimed that the weapons forged from Nabatean bones were "Heroes' Relics" gifted to humanity by the goddess, in order the hide their true nature from the people

After the establishment of the Church, Seiros began her endeavor to revive Sothis, using the Church to control Fódlan from the shadows, eliminating any who would oppose her.

Becoming Rhea

As Nabateans have a longer life span than humans, Seiros faked her death and continued to control the Church from behind the scenes. A thousand years later, she assumed the alias of Rhea and once again assumed direct control of the Church while continuing to advance her plans. As Rhea had shared her blood with Jeralt to save his life, she also used the Crest of Flames to revive a newly born Byleth, implanting its Crest Stone in his heart when he was a baby. Seiros believed that Byleth would be the perfect vessel for the Goddess.

However, Jeralt grew suspicious of Rhea due to the circumstances of his wife's death and Byleth's condition, who had a pulse but no heartbeat and never cried. Losing his faith in Rhea after believing his wife died of something else, Jeralt faked his and Byleth's deaths and left the Knights of Seiros with his child, being forced to return many years later after being discovered by Dimitri, Edelgard, Claude and Alois. In the years following Jeralt's disappearance, two of the Four Saints, Cihol and his daughter Cethleann, joined Rhea at Garreg Mach Monastary, taking the names Seteh and Flayn respectively and masquerading as brother and sister.

Black Eagle (Crimson Flower)

Note: This route can only be achieved by choosing the Black Eagle, attending Edelgard's ascension ceremony in time and choosing to spare her.

After Byleth chooses to defend Edelgard instead of killing her, Rhea grows furious with Byleth, transforming into her true form: The Immaculate One. Before she can finish them off, though, they flee. After the Adrestrian Empire and the Black Eagles successfully storm Garreg Mach Monastery, she transforms again and attacks Byelth. Byleth goes missing for five years and, unlike other routes, Rhea is not captured. In those five years, Rhea and the Church of Seiros are granted asylum within the Holy Kingdom of Faerghus by the newly crowned King Dimitri, forming an alliance with him against Edelgard and the empire and figting them to a standstill.

She slips further down into madness and revenge over Byleth's betrayal and eventually chooses to discard her alias as Rhea and just be called Seiros again. While Edelgard and the Black Eagle Strike Force capture what is left of the Leicester Alliance and either kill or exile Claude, Rhea plans an assault to recapture the Monastery in their absence, with Seteth and Flayn appearing in the battle. If fought by Byleth, Seteth notes that even he can't follow Rhea/Seiros' course anymore, despite being her advisor for so many years. They can be spared if defeated by Byleth, after which the two will go into hiding. In this scenario, Seteth will send Seiros a letter after the battle, explaining that while he despises Byleth for their betrayal, he prioritises Flayn's safety above all else. Regardless of the outcome, Seiros becomes even more furious at Byleth for taking them away from her as well.

She appears alongside Dimitri in the penultimate chapter as an optional enemy commander, hoping to intercept the Imperial army on their way to conquer Fhirdiad, the capital of Faerghus. Seiros is, of course, defeated and retreats. As the Imperial army nears Fhirdiad, she orders Catherine to torch the city, disregarding the civilians still residing there; Catherine initially objects, but reluctantly agrees. For the final battle, Seiros transforms into The Immaculate One once again and fights the Empire out of blind hatred. Upon her defeat, Byleth and Edelgard strike her down once and for all, causing Byleths' Crest of Flames to disappear and their hair and eyes to return to normal, and their heart to start beating for the first time in their life.

Other Media

Super Smash Bros. Ultimate

In Super Smash Bros. Ultimate, Seiros in her Rhea form both appears as a background character in the Garreg Mach Monastery stage and as one of Byleth's DLC spirits. As a spirit, she is an Ace level spirit under the Neutral type. In her spirit battle, the fight is set to being a stamina match on Bridge of Eldin, with the player first required to beat a Palutena, then a giant white Charizard. When equipped, she grants stronger magic attacks.

Gallery

Trivia

  • Seiros/Rhea is the only final boss of the game that is fought in two routes.
  • Rhea is the only major (potential) supporter of Byleth that remains unplayable in all routes, even in the Silver Snow chapter/Church route.
  • Etymology: Rhea is named after a Greek titan known as the "Mother of the Gods" due to being the mother of major Olympians including Zeus, PoseidonHades and Hera. The name may also refer to the mother of Romulus and Remus, the mythical founders of Rome.
    • Seiros may be derived from Seirios, Greek for "scorching", and an alternate name for the star Sirius.

Navigation

           Fireemblem Villains

Archanea Series

Dolhr
Medeus | Gharnef | Morzas | Khozen | Vlozhin | Heimler | Dejanira | Xemcel | Gouber | Bulzark | Degenerated Dragons

Archanea (country)
Hardin | Eibel | Nehring | Willow

Grust
Camus | Lang | Zharov | Dactyl | Grigas | Kannival | Hollstadt | Sternlin | Larissa | Toras

Macedon
Michalis | Lykke | Merach | Bentheon | Emereus | Harmein | Orridyon | Gail | Rumel | Ruben

Gra
Jiol | Gra Captain

Galder Pirates
Gazzak

Others
Hyman | Eremiya | Clarisse | Legion | Bathys | Mannu | Dahl | Yodel | Barm


Fire Emblem Gaiden & Echoes: Shadows of Valentia

Rigel
Rudolf | Berkut | Jerome | Seazas | Magnus | Mueller | Zakson | Gazelle | Lawson | Xaizor | Blake

Duma Faithful
Duma | Jedah | Nuibaba | Medusa | Marla | Hestia | Tatarrah | Mikhail | Garcia | Jamil | Dolth | Gharn | Cerberus | Naberius | Hades | Aurum | Argentum

Zofia
Desaix | Slayde | Fernand

Grieth Pirates
Grieth | Barth | Garth | Wolff | Brigand Boss

Other
Jarth | Degenerated Dragons (Duma)


Jugdral Series

Friege
Bloom | Reptor | Hilda | Ishtar | Ishtore | Kempf | Reinhardt | Liza | Paulus | Baldack | Baráth

Thracia
Travant | Arion | Magorn | Distler

Dozel
Lombard | Danann | Brian | Slayder

Agustria
Chagall | Eldigan | Elliot | Boldor | Philip | Macbeth | Clement | Jacobi

Yngvi
Andrey | Scipio

Silessa
Daccar | Myos | Pamela | Donovan | Díthorba | Cuvuli | Lamia

Verdane
Munnir | Cimbaeth

Munster
Raydrik | Aizenau

Loptr Church
Loptous | Manfroy | Veld | Sandima | Kutuzov

Velthomer
Julius | Arvis | Aida | Vaja | Victor


Elibe Series

Bern
Zephiel | Desmond | Pereth | Rude | Slater | Flaer | Randy | Ohtz | Raeth | Teck | Martel | Jemmie | Zeed

Wyvern Generals
Murdock | Brunnya | Narcian | Galle

Etruria
Roartz | Arcard | Oro | Morgan | Roberts | Zinc | Nord | Scouran | Gelero | Scott | Windham

Ostia
Leygance | Devias

Caelin
Lundgren | Bool | Yogi | Eagler | Zagan

Laus
Darin | Erik | Bauker | Bernard

Sacae
Gel | Djute Clan (Monke) | Glass

Dragons
Jahn | Idunn | Ain

Black Fang
Nergal | Sonia Reed | Brendan Reed | Jaffar | Lloyd Reed | Linus Reed | Ursula | Pascal Grentzer | Uhai | Kenneth | Jerme | Aion | Boies | Teodor | Wire | Oleg | Zoldam | Beyard | Cameron | Heintz

Morphs
Sonia Reed | Limstella | Ephidel

Ganelon Bandits
Migal | Bug | Carjiga

Eubans's Mercenaries
Eubans | Sealen

Others
Zugu | Groznyi | Sigune | Puzon | Taliver Bandits | Damas | Dory | Jasmine and Paul | Maggie and Rose | Henning | Wagner


Fire Emblem: The Sacred Stones

Grado
Lyon | Vigarde | Riev | Valter | Caellach | Selena | Orson | Gheb | O'Neill | Breguet | Saar | Novala | Murray | Tirado | Beran | Aias | Carlyle

Carcino
Pablo | Binks

Bazba's Bandits
Bazba | Bone

Others
Fomortiis | Bandit | Zonta


Tellius Series

Daein
Ashnard | Black Knight | Bryce | Petrine | Bertram | Izuka | Maijin | Dakova | Emil | Balmer | Kamura | Kotaff | Danomill | Mackoya | Norris | Kayachey | Homasa | Kasatai | Rikard | Gromell | Hafedd | Heddwyn | Shiharam Fizzart | Goran

Kilvas
Naesala | Seeker

Gallia
Pain and Agony | Kezhda

Begnion Senate
Lekain | Hetzel | Numida | Valtome | Oliver | Seliora | Kimaarsi | Istvan | Lombroso | Sergei

Begnion Central Army
Zelgius | Levail | Septimus | Callum | Veyona | Silvano | Rommit | Roark | Zeffren

Begnion Occupational Army
Jarod | Alder | Zaitan | Burton | Laverton | Djur | Radmin | Isaiya | Wystan

Crimean Rebels
Ludveck | Yeardley | Maraj | Tashoria

Disciples of Order
Catalena | Yuma | Dheginsea | Sephiran | Ashera

Zawana's Bandits
Zawana | Ikanau | Ikanau's Thug

Others
Havetti | Nedata | Gashilama | Schaeffer | Pugo | Feral One


Fire Emblem Awakening

Plegian Army
Gangrel | Aversa | Garrick | Orton | Vasto | Campari | Mustafa

Valmese Empire
Walhart | Yen'fay | Excellus | Cervantes | Pheros | Ignatius | Farber | Dalton

Grimleal
Grima | Validar | Excellus | Aversa | Chalard | Ardri | Nelson | Jamil | Algol

Others
Victor | Vincent | Roddick | Gecko | Xalbador | Cassius | Ruger | Morristan | Gyral | Dalen | Nombry | Ezra | Zanth | Hierarch

Einherjar
Camus | Gharnef | Legion | Hardin | Travant | Arvis | Julius | Ishtar | Raydrik | Narcian | Zephiel | Lloyd Reed | Linus Reed | Ursula | Nergal | Lyon | Oliver | Petrine | Black Knight | Ashnard | Sephiran


Fire Emblem Fates

Nohr
Garon | Arete | Iago | Hans | Zola | Daniela | Kilma | Nichol | Candace

Hoshido
Sumeragi | Omozu | Haitaka | Kumagera | Daichi | Senno

Valla
Degenerated Dragons (Anankos) | Arete | Anthony

Others
Kotaro | Gazak | Funke | Lloyd and Llewelyn | Tarba | Zhara


Fodlan Series

Those Who Slither in the Dark
Thales | Solon | Kronya | Cleobulus | Myson | Odesse | Bias | Pittacus | Chilon | Anaximandros | Dolofonos | Epimenides

Church of Seiros
Seiros | Aelfric Dahlman

Flame Emperor Army
Flame Emperor | Death Knight | Kostas | Metodey

Adrestian Empire
Edelgard von Hresvelg | Volkhard von Arundel | Hubert von Vestra | Jeritza von Hrym | Ludwig von Aegir | Grégoire von Varley | Randolph von Bergliez | Fleche von Bergliez | Baron Ochs | Baron Bartels | Viscount Fenja | Viscount Menja | Baron Barnabas

Holy Kingdom of Faerghus
Dimitri Alexandre Blaiddyd | Rufus Thierry Blaiddyd | Lonato Gildas Gaspard | Miklan Anschutz Gautier | Gwendal Roche | Count Rowe | Viscount Mateus | Viscount Elidure | Viscount Gideon | Viscount Kleiman | Count Duval | Baron Pryderi | Gaspard's Militia | Mateus's General | Duval's General | Cornelia Arnim

Leicester Alliance/Leicester Federation
Claude von Riegan | Erwin Fritz Gloucester | Acheron Lethe Phlegethon | Viscount Siward | Viscount Albany | Gloucester's General | Phlegethon's General

Ten Elites
Nemesis | Maurice | Riegan | Blaiddyd | Gloucester | Lamine | Goreril | Daphnel | Dominic | Gautier | Fraldarius | Charon

Others
Pallardó Davino | Shahid | Leif | Mercenary Captain | Duscur General | Ingrid's Suitor | Almyran Navy Captain | Death God Gang's Leader | Western Church's Leader | Balthus's Assassin | Gloucester's Mercenary | Duscur Insurgent Commander


Fire Emblem Engage

Gradlon
Sombron | Fell Princess | Four Hounds (Zephia | Griss | Marni | Mauvier) | Corrupted | Corrupted King | Corrupted Monarch

Elusia
Hyacinth | Ivy | Hortensia | Nelucce | Abyme | Rodine

Alternate Elyos
Fell Heir | Fell Alfred | Fell Céline | Fell Diamant | Fell Alcryst | Fell Ivy | Fell Hortensia | Fell Timerra | Fell Fogado

Dark Emblems
Shadow Dragon | War Father | Dark God | Dark Bishop | Demon Dragon | Dark Druid | Demon King | Mad King | Judgement | Despair | Mad Dragon | Liberation King

Others
Teronda | Mitan | Tetchie and Totchie | Emblem Veronica


Fire Emblem Heroes

Emblian Empire
Embla | Veronica | Bruno | Elm | Letizia

Kingdom of Múspell
Múspell | Surtr | Laevatein | Laegjarn | Helbindi

Realm of Hel
Hel | Líf | Thrasir | Gustav | Ganglöt

Dökkálfheimr
Freyja | Triandra | Plumeria

Realm of Ginnungagap
Ginnungagap

Niðavellir
Fáfnir | Ótr | Eitri

Vanaheimr
Gullveig | Njörðr

Yggdrasil
Læraðr | Hræsvelgr | Níðhöggr

Ásgarðr
Alfaðör | Loki | Thórr

Others
Aelfric | Anankos | Arete | Arion | Arvis | Ashera | Ashnard | Aversa | Berkut | Bertram | Black Knight | Brigand Boss | Brunnya | Caellach | Camus | Candace | Cervantes | Clarisse | Cornelia | Corrupted Monarch | Death Knight | Dheginsea | Díthorba | Duma | Eldigan | Eremiya | Fell Princess | Fernand | Flame Emperor | Galle | Gangrel | Garon | Gharnef | Grima | Hans | Hardin | Hestia | Hilda | Hortensia | Hubert | Iago | Idunn | Ishtar | Ivy | Jaffar | Julius | Kempf | Kronya | Legion | Limstella | Linus Reed | Lloyd Reed | Ludveck | Lyon (Fomortiis) | Marla | Mauvier | Medeus | Michalis | Murdock | Mustafa | Narcian | Nemesis | Oliver | Orson | Petrine | Reinhardt | Riev | Rudolf | Seiros | Selena | Sephiran | Solon | Sonia Reed | Ursula | Travant | Validar | Valter | Veld | Vigarde | Walhart | Yen'fay | Zephia | Zephiel


Fire Emblem Warriors

Validar | Iago | Gharnef | King Oskar | Velezark


Tokyo Mirage Sessions ♯FE

Garrick | Aversa | Gangrel | Lon'qu | Excellus | Lorenz | Dark Yashiro | Dolph | Linde | Macellan | Palla | Yatsufusa Hatanaka | Gharnef | Pheros | Cervantes | Medeus | M-DEUS

            Bro Villains

Playable Characters
Bowser | Bowser Jr. | Dark Pit | Dark Samus | Donkey Kong | Enderman | Ganondorf | Incineroar | Kazuya Mishima | King Dedede | King K. Rool | Koopalings (Larry, Roy, Wendy, Iggy, Morton, Lemmy, Ludwig) | Mario | Meta Knight | Mewtwo | Piranha Plant | Ridley | R.O.B. | Sephiroth | Wario | Wolf O'Donnell | Zombie

Subspace Army
Ancient Minister | Bowser | Bullet Bills | Duon | False Bowser | False Diddy Kong | False Peach | False Samus | False Zelda | Galleom | Ganondorf | Goombas | Hammer Bros. | King Statue | Koopa Troopas | Master Hand | Petey Piranha | Primids | Rayquaza | Ridley | Porky Minch | Shadow Bugs | Tabuu | Wario

World of Light
Crazy Hand | Dharkon | Dracula | Galeem | Galleom | Ganon | Giga Bowser | Master Hand | Marx

Bosses
Crazy Hand | Dark Emperor | Dharkon | Dracula | Duon | Galeem | Galleom | Ganon | Giga Bowser | Marx | Master Hand | Master Core | Metal Face | Petey Piranha | Porky Minch | Rayquaza | Ridley | Tabuu | Yellow Devil

Assists Trophies/Poké Ball Pokémon/Miscellaneous Items
Andross | Arceus | Black Knight | Bob-ombs | Boss Galaga | Bullet Bills | Burrowing Snagrets | Chain Chomps | Chef Kawasaki | Darkrai | Deoxys | Devil | Dr. Wily | Entei | Elec Man | Ghirahim | Giratina | Ghosts | Gray Fox | Hammer Bros. | Klaptrap | Knuckle Joes | Kyurem | Lakitu | Lord Nightmare | Metroid | Meowth | Mimikyu | Mother Brain | Palkia | Phosphora | Shadow the Hedgehog | Skull Kid | Spinies | Starman | Unira | Unown | Waluigi

Trophies/Spirits/Stickers
Acro | Affinity | Akuma | Alraune | Albert Wesker | Amalthus | Andrew Oikonny | Antasma | Aparoids | Aparoid Queen | Arlon | Ashnard | Axel | Baba | Baby Bowser | Babylon Rogues (Jet the Hawk, Wave the Swallow, Storm the Albatross) | Balrog | Banzai Bills | Bass | Big Boss | Bio Rex | Birdo | Black Shadow | Blood Falcon | Bokoblins | Blippers | Bloopers | Bombers | Bonkers | Boos | Boom Boom | Boom Stompers | Box Boxer | Boxy | Broom Hatters | Bugzzy | Bumpety Bombs | Bulborbs | Burt the Bashful | Buzzy Beetles | Byrne | Cackletta | Calamity Ganon | Camus | Cappys | Captain Syrup | Carmilla | Chandelure | Chaos | Chaos Kin | Chargin' Chucks | Chozo Soldiers | Clubberskulls | Colonel Pluck | Condor | Careening Dirigibugs | Cragalanche | Creepers | Creeping Chrysanthemums | Count Bleck | Count Cannoli | Cranky Kong/Donkey Kong (arcade) | Daphnes | Dark Man 4 | Dark Matter | Dark Matter Blade | Dark Mind | Dark Monita | Darknuts | Daroach | Deadly Six (Zavok, Master Zik, Zeena, Zomom, Zazz, Zor) | Death | Deathborn | Deep Cut | Devil Jin | Demise | Demon King Arzodius | Diggernaut | Dimentio | DJ Octavio | Don Bongo | Donkey Kong Jr. | Drackys | Dragaux | Dr. Ivo "Eggman" Robotnik | Dry Bones | Eagle | E-123 Omega | Edelgard von Hresvelg | Eggplant Wizard | EggRobos | Emerl | E.M.M.I. | Ender Dragon | Erazor Djinn | Evil Ryu | Father Balder | Fawful | Fiery Blowhogs | Flages | Fortitudo | FU | Fynalle | Gabriel Belmont | Gangrel | Galacta Knight | Galactic Fiend Kraken | Garon | Gengar | General Guy | Geese Howard | Gharnef | Ghasts | Ghosts | Gleeoks | Goda | Gold Bone | Golems (Kirby) | Golems (Dragon Quest) | Gomorrah | Gooper Blooper | Gordos | Goro Akechi | Great Reaper | Great Sabrecats | Grief | Gruntilda | Guardians | Hades | Hawke | Heihachi Mishima | Helmaroc King | Hewdraw | Hooktail | Hoopa Unbound | Hot Heads | Igor | Infinite | Ing | Inspired | Iori Yagami | Iridescent Flint Beetles | Iridescent Glint Beetles | Iron Golems | Jade Face | Jeanne | Jin | Jin Kazama | Julius | Juri Han | Kalypso | Kamek | Kammy Koopa | Kanden | Karate Kong | Kass | King Bob-omb | King Boo | King Dice | King Dodongo | King Hippo | King Knight | King Olly | King Slimes | Kip | Kludge | Kracko | Kraid | Kritters | Kuma II | Kyle Merkulov | Leon Powalski | Lethiniums | Liquid Snake | Loptr | Lord Fredrik | Louie | Lurchthorns | Lyon | MB | M. Bison | Magnamalo | Magolor | Mahvas | Majora | Malladus | Malos | Masked Man | Master Belch | Master Kohga | Mecha Ridley | Medeus | Medusa | Megontas | Meta-Knights (Axe Knight, Javelin Knight, Mace Knight, Trident Knight, Blade Knights, Heavy Lobster) | Metal Sonic | Metroid Prime | Mimicuties | Moblins | Mockiwis | Moley | Monoeyes | Mouser | Mr. Frosty | Mr. Shine and Mr. Bright | Mugly | Nabbit | Natah | Necrozma | Nihilego | Nightmare | Nina Williams | Ninja Kong | Nipper Plants | Noxus | Nruffs | Nutskis | O'Chunks | Octoman | Octoroks | Olaf | Ornes | Pandora | Panther Caroso | Paper Bowser | Parasite Queen | Paz Ortega Andrade | Peckish Aristocrabs | Phantom Ganon | Pico | Pidgits | Piglins | Pigma Dengar | Pigmasks | Plague Knight | Plasma Wisps | Plasm Wraith | Pom Pom | Pompy | Poppy Bros. Jrs. | Princess Shroob | Quaggled Mireclops | Queen Metroid | Queen Sectonia | Rabbid Kong | Rabbids | Raphael the Raven | Reapers | Redd | Reshiram | Rhea | Revolver Ocelot | Riku | Risky Boots | Robot Masters (Cut Man, Guts Man, Ice Man, Bomb Man, Fire Man, Metal Man, Air Man, Quick Man, Crash Man, Flash Man, Wood Man, Hard Man, Top Man, Spark Man, Snake Man, Shadow Man, Drill Man, Dive Man, Skull Man, Gravity Man, Napalm Man, Knight Man, Wind Man, Slash Man, Sword Man, Galaxy Man) | Rockys | Rodin, the Infinite One | Roger the Potted Ghost | Rouge the Bat | Rufus Shinra | Ryuichi and Ryuji | Sagat | Salamence | Scarfies | Scurvy Crew | Shadow Beasts | Shadow Queen | Shaft | Shake King | Sheegoth | Shield Knight | Shotzos | Shroobs | Shy Guys | Sidesteppers | Sigma | Sir Kibbles | Skeletons | Skuttlers | Slimes (Dragon Quest) | Slimes (Minecraft) | Smoky Progs | Snowmads | Solidus Snake | Space Pirates (Kid Icarus) | Space Pirates (Metroid) | Specknoses | Specter Knight | Spire | Squeakers | Starmans | Stu | Swooping Snitchbugs | Sylux | Tacs | Tatanga | Thanatos | The Devil | The Skull | Therion | The Three Mage-Sisters (Francisca, Flamberge, Zan Partizanne) | Tiki Tak Tribe (Tiki Tong, Kalimba, Gong-Oh, Maraca Gang, Wacky Pipes, Cordian, Banjo Bottom, Xylobone) | Trace | Travis Touchdown | Turks (Elena, Reno, Rude, Tseng) | Turret Tusk | Twinbellows | Twinrova | Ultimate Chimera | Vaati | Validar | Vega | Viridi | Viruses | Vivian | Vorash | Waddle Dees | Waddle Doos | Walhart | Walkys | Wart | Weavel | Wheelies | Whispy Woods | Whomps | Wigglers | Wollywogs | Xord | X-Parasites | Yaldabaoth | Yuga | Yveltal | Zangief | Zant | Zekrom | Zero | Zingers | Zoda | Zurees

Miscellaneous
Billy Kane | Chang Koehan | Choi Bounge | Dr. Coyle | Dragonborn | Grima | Organization XIII (Master Xehanort, Xemnas, Ansem, Vanitas) | Ryuji Yamazaki | Saïx | Solon | Spiders | Springtron | Team Rocket Grunts | Yiga Foot Soldiers