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Deep Sea Dolphin (Sea Queen in the original Japanese) is a major yet unseen villainess in the Slayers Fantasy franchise. She is the least featured of the Demon Lords created by Ruby Eye Shabranigdo, who remains hidden and always acts through her enforcers. In the manga Knight of Aqualord, she is directing their scheme to steal the power of her Dragon Lord counterpart and destroy the world with it.
Appearance[]
Deep Sea Dolphin's human aspect is described in the novel as a fair, regal and delicate woman about twenty years old with long black hair, and depicted with fully black eyes, wearing a rich blue robe ornate with blue gems, jewellery, and hair ornaments.
In the manga, she briefly appears as a beautiful, ethereal woman, with long and unruly white hair covering her eyes and naked body. She first assumes a fair aspect to gain her target's trust, with her skin turning dark when foiled.
Her true demonic form was never revealed, but judging from her name and domain, it is bound to be a titanic sea-monster, most likely with dolphin-like, cetacean features.
Personality[]
Since Deep Sea Dolphin relies on servants and only involves herself when she absolutely must, her personality is mostly unknown. In the novel, she appears poised, refined and formal, if a bit business-like. She prefers actions to words and speaks in an antiquated, flowery way, but gets oddly cheerful when taking matter in hand.
In the manga, she seems to enjoy watching battles. And while irked at first, she is quite graceful when foiled, yet likely due to her overall goal being still going. Her mention of her plan and demon enforcers taking after their liege, show her as highly intelligent and conniving.
Dolphin at least has a hand in her enforcer's plot to set the stage to lead targets where she wants, opening the way to what she covets, for her to grab. Dolphin also proves highly manipulative, playing on her targets' helplessness and anguish to entice them with images of their loved ones and reassuring words. Finally, she appears as very power-hungry, coveting all the powers linked to water, be they divine ones, and use them to destroy the world in her liege's name.
A persistent fan-theory claims that Dolphin and Zelas Metallium hate each other and that Zelas drove her insane, but the author Hajime Kanzaka debunked it. Her plot in the manga establishes her as sane and just as dangerous as her fellow Demon Lords. Furthermore, she is seen with Zelas in the novels, and they interact normally.
Powers and Abilities[]
In Slayers, demons are evil spirits dwelling in the Astral Plane, who can project themselves on the Earthly Plane. As a Demon Lady, Deep Sea Dolphin can access everywhere from the Astral Plane; shape-shift his projection to mimic any life-form; create objects of all sorts and size as part of it; absorb places in it to control them; teleport, levitate, or turn invisible. Only magic able to target their astral self can harm demons, but they can regenerate.
Dolphin is immensely powerful. She can spawn (and reabsorb) demons from her essence; brainwash or empower anyone; corrupt, twist, transform, teleport and float things and people; sense auras; alter landscapes; open pocket dimensions; and use the dark powers basis of Black Magic to perform spell-like feats.
She can warp distances, control the Water element and most likely all sorts of sea-monsters. The Black Magic spells using her might are the Dolf Strash (an all-cutting energy spear) and the Dolf Zoke (shaping water into a deadly wave of spears).
History[]
Creation[]
Deep Sea Dolphin is the Demon Lady ruling the Demon Sea. She was spawned with the others about five millennia before the story, before the Demon God Ruby Eye Shabranigdo and the Dragon God, Flare Dragon Ceifeed beat each other: Ceifeed's soul was scattered and Shabranigdo was divided in seven fragments sealed in human souls.
The War of the Dark Lord's Resurrection[]
Over a thousand years before the story, Hellmaster Fibrizo staged a war he spread throughout the word, before swarming the lands with demons. His goal was to make the great archmage Lei Magnus fall into despair, to awake the fragment of his liege he discovered sealed in his soul. The newly titled Demon King of the North took command of the demons to start the War of the Dark Lord's Resurrection against the dragons, the worst conflict in history.
The Demon Lords destroyed most of Ceifeed's temples to eradicate nearly all knowledge of Holy Magic (the best weapon against them). After that, they created the Demon Barrier: a gigantic force-field cutting the world in two and cancelling Holy Magic, drastically weakening dragons. The war ended after Dragon Lord Ragradia's demise, who had fused Chaos Dragon Garv with a human soul and sealed Lei Magnus in the glaciers of the Kataart Mountains. Dolphin retreated to the Demon Sea, keeping her side of the Demon Barrier and waiting for an opportunity.
Role in the Novels[]

Zelas Metallium (right) and Deep Sea Dolphin (left)
Deep Sea Dolphin Deep Sea Dolphin briefly appears in person alongside Zelas Metallium, after Dynast Grausherra awakes the fragment of Ruby Eye Shabranigdo he found in a young mercenary named Luke.
Luke-Shabranigdo orders the two to guide Lina and Gourry towards the pocket dimension where he awaits them. The Demon Ladies greet the heroes without malice, and Dolphin warps their friends miles away before they enter the dimension. Not yet fully corrupted, Luke challenges his friends to a duel for the fate of the world, and they grant his wish to die.
Role in the Manga[]
Deep Sea Dolphin is the primary villainess by proxy in the manga Knight of Aqualord, which is part of an alternate continuity. She sends the two villainesses (one strongly hinted, and later confirmed to be her Priestess, the other introducing herself as her General), and she is hinted to direct at least the basis of their plan from afar.

Huraker, Dolphin's cunning Priestess.
The powerful sorceress Lina Inverse and the master swordsman Gourry Gabriev, meet Huraker, a clumsy, unlucky girl who asks to play gambling games with her. However, luck turns and they end up heavily indebted.
Unable to pay, they must go to the Island at the End of the World, near the Demon Barrier's limit, to pay Huraker with the legendary gem known as the Fang of the Dark Lord. The Fang being too huge to be carried, Lina casts a spell to divide it into smaller shards.
Right after, the island sinks underwater and Lina gets separated from Gourry, in a place where she cannot use Black Magic, and is saved from monsters by the titular Knight of the Aqualord: Lyos, a teenage swordsman bearing a fragment of the late Aqualord Ragradia's divine power, albeit in a dormant state.
Lina realizes that she is outside the Demon Barrier, where magic is considerably less advanced. On her way to Thi Toh, capital of the Kunan Empire, she meets Huraker, stranded there by a storm, who states that Lina's shards of the Fang of the Dark Lord are not enough to repay her. While Lina reunites with Gourry, Huraker uses shards of the Fang to pay people, who later get corrupted.
The heroes reunite with their friend Princess Amelia of Saillune, who is making diplomatic visits in the land beyond the breached Barrier. As the child-emperor's regent hires the heroes to seek the fabled Power of the Gods, Lina identifies the shards as vectors of dark power, realizing that demons are plotting once again.
On their way, they reach Lyos' hometown and learn to their shock that everyone there, even her mother, hate him and blame him for all the accidents in the local mine. It also turns out than Lyos is searching for his benefactor Soi Ren Hayze, a rich young lady and the only one to show him kindness, who identified him as the Knight of the Aqualord, but recently vanished (perhaps due to Dolphin's plot).

Riksfalto, Dolphin's violent General.
The heroes meet Fanan, an abrasive girl and her twin sister Orun, who tells them of relics harnessing divine power at great personal cost, with countries ruined by misusing it.
They are attacked by Dolphin's General Riksfalto, who rips off Lyos' arm with her fist. But the boy swiftly heals and fights back, exhibiting huge power. Amused, Riksfalto departs for now.
A nameless beast-man warrior, and friend to the previous Knight of the Aqualord, takes in Lyos for training in body and mind. Meanwhile, Riksfalto meets with Huraker, who asks about Dolphin's instructions. It now becomes clear that Huraker is stringing everyone in an intricate plan…
Harassed by demons shape-shifting to their loved ones, the heroes let Orun send Lina to Valwin himself. She renews his faith in mortals and is granted part of his power, after figuring out its true meaning. Riksfalto returns and kills Lyos’ mentor, only to be killed as he awakes his divine power, realizing that even she was but a pawn in Huraker’s plot. Alas, Lyos loses control, turning feral and monstrous.
Laughing, Huraker reveals that she set it all up, using the shards to call endless hordes of demons attracted to divine relics, to keep the heroes on edge and push them to look for the Dragon Lords' power she covets. Meanwhile Riksfalto would force Lyos to train just enough for her needs. With divine powers attracting one another, she expected Lyos to awake Ragradia's in reaction to Valwin's call, and get overwhelmed due to lacking control, open for her to possess.

Dolphin's cameo in the manga.
Unwilling to harm her friend, Lina realizes that divine powers return to Ceifeed's essence when made to clash. She uses it to reach Lyos' mental landscape and free him, just as Dolphin herself was using his doubt to lure him into her clutches.
While they both failed to control Lyos, the cunning Priestess can still take their divine powers from their corpses, taking advantage of their inexperience. But the two channel their combined might into Lyos' sword, killing Huraker and ruining Dolphin's plan. After that, the heroes opt to keep exploring this part of the world.
Trivia[]
Like her fellow Demon Lords, Deep Sea Dolphin is based on an Arch Demon described in the Ars Goetia, the first chapter of the grimoire The Lesser Key of Salomon, describing seventy-two demons who according to Biblical Lore, were trapped and enslaved by King Salomon.
Dolphin is based on Vepar, the forty-second demon and a Grand Duke of Hell, who takes the aspect of a mermaid, and is able to cause storms on the ocean or spread rot all over the shore. Like him, Dolphin rules seas and water, and her attractive human form mirrors the feminine one he takes.
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Slayers Villains | ||
Deities Shabranigdo's Generals Greater Demons and Major Villains Demon-worshiping cult |