He comes from a branch of the Gero family and was apparently his grandmother's favorite. His whole thing is being a poison master—he literally stores toxins in his own body and fights with poison threads. It's a weird setup, but it works for him. What's really telling is that he keeps Master Hikaru's toxic concoctions inside himself specifically to feel closer to his cousin. That level of devotion is pretty intense. He's never been fond of Akari Gero, Hikaru's younger sister, so there's definitely some family drama there. When he's not dealing with poison or family tension, his go-to meal is hamburg steak.
Content compiled by AnimeList.moe from publicly available sources.
