Tamaki Amajiki (天あま喰じき環たまき, Amajiki Tamaki?), also known as the Omnivore Hero: Suneater (悪あく喰じきヒーロー サンイーター, Akujiki Hīrō San'ītā?), was a student in Class 3-A at U.A. High School and was part of The Big 3.

Following the Final War, Tamaki graduates from U.A. High School and becomes a Pro Hero as well as Fat Gum's sidekick. Eight years later, he is the current No. 18 Hero.