|“||You're just a pathetic old man. How dare you get in the way of my brilliant plan...you dog.||„|
|~ "Monica" after stabbing Jeralt.|
|“||(Leonie: Monica. You'll pay for what you've done.) I told you! I am not Monica, I am Kronya! Do not call me by that fake name! (Leonie: I don't care what you're called. I don't care if it takes my last breath. I'll kill you!) Please, my powers are beyond your comprehension. You're just a filthy worm!||„|
|~ Kronya VS Leonie|
|“||Just the sight of your face makes me so angry! Can I kill you now, just to get it over with? Please? Gah! Why not? It would be easy. You're such a weak creature that I'd hardly have to lift a finger. Fighting alongside you, sharing our victories and defeats... I'm beginning to feel attached to you. I don't know why. I'm an Agarthan, and you're just a pathetic little worm. It's unthinkable. It's repulsive! But that's how I feel. So if you won't let me kill you, you'll have to agree to be my plaything. Forever. All right?||„|
|~ Kronya threatening the Summoner in Fire Emblem Heroes.|
Kronya, also known as Monica von Ochs in her student disguise, is a supporting antagonist in Fire Emblem: Three Houses and a member of Those Who Slither in the Dark. During the Acadamy Phase, she disguised herself as Monica, presumably done after killing the real one, and inflitrated the Garre Mach Monestary, turning other students into Demonic Beasts and killing Jeralt.
She is voiced by Marika Kōno in Japanese version and by Colleen O'Shaughnessey in English version.
Kronya hails from Agartha and is one of Those Who Slither in the Dark .
Kronya infiltrates Garreg Mach Monastery's Officers Academy by posing as a girl named Monica von Ochs, an about-to-graduate Black Eagles student who had gone missing a year prior.
During the Horsebow Moon of 1180, the Death Knight kidnaps Flayn, and when Byleth and their class rescue her, they find an unconscious Monica at her side. Monica quickly recovers and re-enrolls in the Officers Academy as a member of the Black Eagles. Other students and members of the Monastery observe that she has grown quite close to Edelgard and that her personality has completely changed. Her personality shift is largely attributed to her apparent year in captivity, though in reality, it's simply Kronya's true personality peeking through her disguise.
Kronya reveals her true identity after Those Who Slither in the Dark are defeated by Jeralt, Byleth, and some of the students of the Officers Academy while experimenting on other students. As Monica, Kronya pretends to have been one of the captives, approaching Jeralt to thank him, but once he turns his back on her, she stabs him. Byleth attempts to use Sothis' Divine Pulse to stop her, but Thales appears and blocks Byleth's attack on her. She expresses shock that Thales made an appearance, but he teleports her away with little explanation.
Later, Thales and the Flame Emperor are discussing Kronya's carelessness, as her death would have revealed the truth behind Those Who Slither in the Dark's identities. Thales tasks Kronya to team up with Solon, a prospect she expresses excitement for. Kronya engages Byleth and their students in battle once more, taunting them and revealing her true appearance, but is defeated. Before Byleth can cut her down, Solon appears and sacrifices her, using her in order to enact a ritual that will banish Byleth and Kronya to a dark dimension. Kronya's sacrifice ends up for naught, as the power of Sothis frees Byleth from this dark dimension and Solon is killed shortly thereafter.
Kronya is a psychotic, murderous and sadistic assassin who has a childish streak which annoys the Flame Emperor. Her childish behavior hides her severe brutality and bloodlust, remorselessly backstabbing her victim with a smile on her face. She also acts arrogant towards her enemies, calling them vermin. However, in her last moment, she was also revealed to be a coward who ran away from Byleth after her defeat, and begged them to save her as she was betrayed by Solon and was about to be sacrificed for his ritual.
- Kronya is the only summonable Fire Emblem villain in Fire Emblem Heroes that does not get an adaptational heroism. She maintains her condescending attitude and even sends death threats towards the Summoner, who is notable for earning some sort of respect and friendship from many villains, including the likes of Zephiel, Gharnef and even the misanthrophic Grima.
- Ironically, while she became the first member from Those Who Slither in the Dark that became playable in Fire Emblem Heroes, she never has more impact on the entire story (unlike all others from Three Houses) other than killing Jeralt, and is slain one chapter after that.