Highschool DxD Codexery

Serafall Leviathan

A bubbly queen with angelic power and a heart for cute things.

Serafall Leviathan is a High-Class Devil and former leader of the Fallen Angels who serves as a powerful ally to the Gremory Peerage. Originally an Archangel, she underwent multiple transformations before aligning with the modern peace treaty between supernatural factions. Her role in the story involves bridging gaps between Devils, Angels, and Fallen Angels while participating in Rating Games. She is known for her overwhelming magical power and distinctive cheerful personality that often hides her serious nature.

Race
High-Class Devil (Originally Archangel)
Affiliation
Great Satan Faction / Gremory Allies
Status
Active
Alignment
Chaotic Good
Power Source
Innate Magic & Divine Heritage
Former Role
Fallen Angel Leader

Lore & Background

Serafall's history is one of the most complex in the supernatural world. Born as an Archangel named Seraphim, she eventually fell from grace to become one of the Great Kings of the Fallen Angels. Eventually, seeking peace rather than eternal war, she transitioned into Devilhood during the new era of coexistence between factions. Despite her current status as a High-Class Devil, she retains access to holy light magic usually forbidden to non-Angels. This unique heritage makes her a diplomatic asset and a terrifying combatant. Her presence often signals that a major conflict is being mediated or resolved through sheer force if necessary.

In Their Own Story

The afternoon sun filtered through the classroom windows as Serafall leaned against the desk. She twirled a strand of pink hair, humming a cheerful tune that made the air shimmer with faint light particles. Issei froze mid-step, confused by the sudden magical pressure. "Don't worry," she giggled, her eyes sparkling with mischief and ancient power. "I'm just testing your aura." In an instant, the room felt like a cathedral of holy fire, yet she remained smiling softly, proving that even in peace, the Queen never truly sleeps.

Reader's Guide

Serafall Leviathan is currently classified as a High-Class Devil, though her history spans multiple supernatural races. Originally born an Archangel named Seraphim, she later led the Fallen Angels before transitioning to the Devil faction under the new peace treaties. Her affiliation lies primarily with the Great Satan Faction and the Gremory Peerage, acting as a supportive ally in Rating Games. Personality-wise, Serafall presents a cheerful, energetic facade obsessed with cute aesthetics, particularly young girls in skirts. This playful demeanor often masks her immense combat capability and serious strategic mind when threats arise. She maintains close ties with Rias Gremory and frequently interacts with Issei Hyoudou, treating him as a friendly acquaintance despite his power level. Her abilities stem from her unique heritage rather than a specific Sacred Gear. She wields potent light-based magic typically reserved for Angels, alongside standard Devil powers and Fallen Angel techniques. This versatility allows her to adapt to various battlefields, making her one of the strongest figures in the modern supernatural landscape. Her presence often signifies a shift towards diplomatic resolution or overwhelming force depending on her mood.

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