Ben 10 Heatblast

"Hey! Why don't you pick on someone with real firepower?"
– Heatblast while fighting Vilgax's Drones.

Heatblast is a plasma-based life-form whose body is composed of a super hot inner plasma body covered by dark reddish brown volcanic rocks.As a fire-based entity, his body radiates high amounts of heat. His feet have a slight oval-like design with only two toes and one back toe. His tongue is also made of fire while his collarbone resembles a volcano which generates a fiery "hair" that covers his head, leaving his mask-like face visible with no nose or ears.

When under the effects of a cold in Side Effects, Heatblast's fiery skin (excluding his rocky body) turned blue. In Back with a Vengeance, Heatblast wore a yellow raincoat.