Heatblast head is completely fiery, with his eyes being connected to that flame which can be put out by a sufficient amount of water. His feet have only two toes and one back toe.
In Omniverse, for both Bens, he looks the same as in Ultimate Alien, only his eyes are once again connected to the fire on his head just like it was in the Original series, his shoulder plates slightly tilt up and the 16-year-old Heatblast is taller and much more muscular.
Heatblast has the ability to generate, manipulate and project intense heat and fire from his body. He can shape that fire into fireballs, fire breath, flaming discs and fire tornadoes. He can also use fire in defensive maneuvers such as making a wall out of fire.
By propelling himself like a rocket, enabling Heatblast to fly long distances for limited periods of time.