Monster Carrot (Toninjinka; Viz "Carrot Master") is an anthropomorphic rabbit, and the leader of the Rabbit Mob. Each of his cronies are subject to wearing a pair of false rabbit ears (as well as Bulma, who was first treated as a gangster, as well). Before their downfall at the hands of Goku, the Rabbit Mob is in control of a remote village somewhere in the Diablo Desert.

(Source: Dragon Ball Wikia)