Leviathan Leiji

Iruma Suzuki

A 14-year-old human boy whose parents sold him to a demon named Sullivan, who subsequently transports him to the Demon World and adopts him as his grandson. He starts his new life

Alice Asmodeus

Alice Asmodeus is the top student of his class at Babyls. His rank and power exceeds those of most other freshman. For a very short time, he was antagonistic, but later became Irum

Clara Valac

Clara is one of the stranger students at the school, acting very much like an excited child. She has abundant energy that most students can't keep up with. Other students find her

Ameri Azazel

Ameri is the president of Babyls' Student Council. She is convinced humans exist, despite them only being myth in the demon world, and believes Iruma to be one. Ameri hides the fac

Kalego Naberius

Iruma Suzuki's Familiar/Contracted Demon The homeroom teacher of the Misfit Class, and one of the prestigious professors at Babyls Demon School. Derisive, snappy, and short-tempere

Sullivan

Sullivan is the adoptive grandfather of Iruma and the principal of Babyls. He is one of the Three Heroes, the most powerful and influential demons in society, and is a possible can

Opera

Sullivan's servant who does the chores around the house. Opera was Kalego's upperclassman when they were both students at Babyls. Opera has a serious, down to earth personality. Th

Sabro Sabnock

Sabro is the second son of a prestigious family. He dreams of becoming the next Demon King and sees Iruma as a rival after the Rank placement exams. Sabro is a Bet (2) Rank and his

Jazz Andro

Jazz is a Gimel Rank and has the pickpocketing ability.

Lead Shax

A cheerful guy who is often seen playing some kind of game. He himself admits that he is addicted to gambling as well as games, and even chooses a battler that allows him to indulg

Elizabetta Ix

Elizabetta is a demon and student at Babyls. She is a member of the Misfits Class. Elizabetta can be described as calm and collected. She often likes to take the back seat in the m

Picero Agares

A student at Babyls who is lazy and is always sleeping/napping on a cloud. He wears an eyemask. Unexpectedly, he's extremely good-looking (ikemen) without his eyemask.

Kamui Caim

A perverted owl-like demon who is ironically a gentleman. He was placed in the Abnormal class due to his non-stop sexual harassment of other female students. His rank is Aleph.

Goemon Garp

A student at Babyls Demon School and a member of the Misfit Class who ends his sentences with -de gozaru. He is willing to help others without anything in return and he is very per

Schneider Allocer

An Aleph rank who is actually very smart despite his goofy looks. He often speaks in proverbs, and apparently knows a large amount of trivia.

Keroli Crocell

Keroli is a student at Babyls Demon School. She is in the same class as Iruma, the Misfit Class. Normally under the guise of an ordinary-looking freshman student, she has an Akudol

Soi Purson

Kiriwo Amy

Kiriwo is a physically and magically weak demon. Despite being an upperclassman at Babyls Demon School, he is only a Beth (2) rank. He hopes to develop tools that will help other w