Race: Alien

Height: 820 cm

Abilities: Acid Breath

Level: Dragon

Affiliation: Dark Matter Thieves

Debut: Chapter 32/Episode 10

Groribas was one of the Alien Invaders who attacked A-City.

Groribas is an alien with a large imposing body. Its head and hands consist of eyeless mouths with rows of long sharp teeth. His head has a spiky dog collar around his neck.

(Source: OnePunch-Man Wikia)