Herohero

Herohero is a member of the guild Ainz Ooal Gown, honored by Nazarick's NPCs as one of the Forty-One Supreme Beings. He created Solution Epsilon and helped design the tomb's Homunculus Maids. In appearance he's an Elder Black Ooze — a shapeless mass of black, tar-like substance that never holds one form for long.

Polite and humble by nature, he genuinely loved the game and hoped for a sequel to YGGDRASIL, if only for the chance to reunite with his old guildmates. In real life, Herohero is worn down and overworked, and it's to Momonga in particular that he occasionally admits how hard things have gotten, feeling guilty for not opening up more often to others.

He was one of only four guild members still active at the end, which is why he logged in on YGGDRASIL's final day — to spend those last moments together with Momonga.