

Heatblast is Ben's first transformation, accidentally activated in the pilot episode of the original series, "And Then There Were 10" when Ben was trying to remove the Omnitrix immediately after it first attached to him.

Heatblast appears to be a magma-based lifeform whose body is composed of a bright inner magma body covered by a reddish-brown charcoal-like crust. Heatblast (A play on heat and blast) is a Pyronite ( pyro- meaning fire, and -nite as in ignite) from the star Pyros. Dee Bradley Baker - Ben 10: Ultimate Alien.David Franklin - Ben 10 (Race Against Time).Grey DeLisle - Ben 10 (As Gwen in "Gwen 10").Charlie Schlatter - Ben 10 (As Kevin in "Framed").Michael Reisz - Ben 10 (As Kevin in "Kevin 11").4 Aliens Introduced in Ben 10: Omniverse.3 Aliens Introduced in Ben 10: Ultimate Alien.2 Aliens Introduced in Ben 10: Alien Force.
