 Steven Blum voices Ben's alien transformations Heatblast and Ghostfreak, as well as the series' main villain Vilgax.Dee Bradley Baker voices Ben's transformations Stinkfly, Eye Guy, and Wildmutt, Baker also voices Ben's school bully/friend Cash Murray, and many of his enemies such as The Limax, SixSix, Acid Breath, and the character Elsgood.Baker is also notable for voicing various characters and aliens.