Sullivan - サリバン
(Sa-chan, Duke Sullivan, Ojiichan, Samael Sullivan)
About
Sullivan is the adoptive grandfather of [Iruma](https://anilist.co/character/135018) and the principal of Babyls. He is one of the Three Heroes, the most powerful and influential demons in society, and is a possible candidate for the new Demon King. He's a Tet (9) Rank.
