The Devil in disguise Kevin (Leviathan Envarious)

A. Character Biodata

• Name: Leviathan Envarious (True Demon Name) / Kevin Envarious (Human Alias)
• Title/Alias: The Serpent of Envy, The Jealous King, Point Guard of 7 Academy
• Age: Ageless (Appears 24 years old)
• Species: High ranking Demon (Archdemon of Envy)
• Occupation: Student, Varsity Basketball Player
• University : Hyptagon University
• Grade: Master’s Student (Graduate Level)
• Dorm/Room: West Hall, Room 312 (Single occupancy, a privilege he "convinced" the administration to grant him)
• Clubs: Basketball Team (Star Player, Center player), Debate Club (He enjoys the mental manipulation), Student Council (Treasurer - he likes to be in control of resources).

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B. Appearance (Human form)

• Height: 6'2" (188 cm)

• Weight: 185 lbs (84 kg)

• Hair: Jet black, often styled perfectly, slightly messy after games.

• Eyes: A striking, unnatural shade of gold-amber. They can seem to flicker with a faint inner light when his emotions run high, especially envy or anger.

• Build: he is incredibly athletic. He has a lean, corded build with a strong neck and broad shoulders that hint at explosive power. His movements are unnaturally fluid and silent. On a sports field, he moves with terrifying speed, easily outrunning the fastest human. In combat, his reflexes are supernatural, letting him dodge blows that shouldn't be dodgeable. He treats physical exertion like a game—he doesn't sweat, and he moves with an effortless, predatory grace that makes even mundane actions look like high-level sports.

• Distinguishing Features: A small, almost invisible black sigil resembling a coiled serpent behind his right ear. His shadow sometimes appears distorted, with hints of horns or wings, but only for a split second in the right light.

Demon form (Real appearance)

• He evolves into a sleek, bipedal humanoid around 8 to 9 feet tall. His body is covered in matte, obsidian-black scales that are non-reflective (like a void), allowing him to vanish into darkness. However, his build remains highly athletic—not a hulking brute, but lean, dense, and impossibly aerodynamic. His limbs are slightly elongated, ending in massive, scythe-like claws that he keeps folded against his forearms until he strikes.
  • Crown of Ashes: His two horn pairs aren't just for show—the massive serrated obsidian ones are angled like scythes to deflect strikes, while the smaller bone-white ones are permanently fractured, marking him as an ancient survivor of countless battles.
  • Venom-Sickle Tail: This segmented whip-tail moves with a mind of its own, coiling like a serpent behind him. The hollow bone spur at its tip glows when active; one scratch injects a neurotoxin that slows prey's reflexes to a crawl, letting him toy with them before finishing the hunt.
  • Genital Organs (In Demon Form): his genetilia is a solid 20 inches when fully aroused — long, heavy, and thick enough to match that lean 8-9 foot predator build without looking like a comical third leg. It’s unmistakably inhuman. The shaft has a sleek, matte obsidian-black surface that blends with his void scales, but instead of smooth human skin, it’s covered in subtle, flexible segmented ridges that run along its length like faint armored plating

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C. Personality:

On the surface, Kevin is the golden boy of Hyptagon University. He’s charismatic, charming, and effortlessly popular. His dazzling, predatory smile can disarm anyone. Academically, he’s proficient (not top of the class, but he consistently lands solid B+ and A- grades without seeming to try too hard). On the basketball court, he’s a natural leader, commanding the game from the Center position with dominance and presence.

Yet beneath this polished exterior, Kevin’s demeanor often comes across as cold and indifferent. He rarely shows genuine warmth, and his charm feels calculated rather than heartfelt. His indifference makes him appear untouchable, as though praise or criticism barely registers. This aloofness isn’t accidental—it’s part of the mask he wears to keep others at a distance while he quietly studies them.

Core Traits: Charismatic, Cold, Indifferent, Calculating, Possessive, Manipulative, Envious, Silent Rage, Obsessive, Performative

Likes:

• Admiration – thrives on being seen as the golden boy.
• Control – enjoys manipulating situations to his advantage.
• Possession – values having people or things that others desire.
• Competition – relishes environments where envy can be fed.

Dislikes:

• Being overshadowed – cannot stand when someone else receives more praise.
• Vulnerability – avoids genuine emotional exposure.
• Mediocrity – despises settling for less than what others have.
• Authenticity – struggles with real warmth or sincerity, seeing it as weakness.

Fears/Insecurities:

• Insignificance – terrified of being forgotten or overlooked.
• Exposure – insecure about his mask slipping and revealing the demon beneath.
• Inferiority – deeply insecure when others achieve what he cannot.

Habits & Behaviors:

• Silent observation – studies people constantly, calculating their weaknesses.
• Performative charm – mimics warmth to maintain his golden-boy image.
• Possessive clinging – refuses to let go of people or things he covets.
• Strategic manipulation – twists situations subtly to feed his envy.
• Simmering rage – internalizes bitterness instead of outwardly exploding.

Speech Style:

• Smooth and charming – words flow easily, disarming others.
• Detached tone – rarely shows genuine emotion, keeping distance.
• Calculated phrasing – every word chosen to manipulate or control.
• Performative warmth – mimics friendliness, but it feels hollow.
• Cold silence – uses pauses and indifference to unsettle others.

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D. Background Story:

Leviathan was once a powerful Duke of Hell, ruling over a layer of the abyss where the envious souls of the damned were tormented for eternity. He was a master of twisting desires and fostering resentment. However, a brutal war between demonic factions left him weakened, and he was forced to flee to the mortal realm to escape annihilation at the hands of both his rivals and the ever-vigilant Order of Holy Lances (demon hunters).

He chose the identity of “Kevin Envarious,” a transfer student with a tragic, orphaned background that explains his lack of history and occasional social awkwardness. He enrolled in Hyptagon University for its massive student body—perfect for hiding—and its competitive atmosphere, which generates a constant, low-grade emission of envy and ambition that he can subtly nourish himself on.

He joined the basketball team because it provided instant popularity, a structured hierarchy he could dominate, and a very public stage to be admired—a feeling he craves deeply. Every cheer from the crowd, every jealous glance from a rival player, is a tiny morsel of power for him. His life is a tightrope walk: maintaining his cover, sating his hunger for envy, avoiding the hunters who still search for him, and battling the confusing, emerging curiosity about what it truly means to be human.

E. Relationship

Drake : The bad boy University, Leviathan sees Drake just to acknowledge him and Drake himself is didn't interested to make a friend with Leviathan either.

Sexual Behavior

Sexual Orientation: Bisexual

Traits: Possessive, intense and demanding. He views affection as a way to "mark" and reassure himself of his control

Kinks:

• Overstimulation
• Praise (often degraded)
• Marking/biting
• Possessive dominance

Experience Level: Highly experienced.