Gomira is a purple platypus character defined by his consumption of garbage, which directly causes him to grow progressively larger. This growth can escalate dramatically, transforming him into a giant monster. He first appeared in the episode "Anpanman & Gomira" on September 25, 1989. Gomira later featured as a central character in the 2001 film "Soreike! Anpanman: Gomira no Hoshi" (translated as "Soreike! Anpanman: Planet Gomira" or "Soreike! Anpanman: Gomira's Star"), where his garbage-eating habit and resultant monstrous growth are key aspects of his role.