Mark Hamill
(Albert Farthington (voice))
Jon Heder
(Behemoth (voice))
Kevin Conroy
(Wade Brewster / Eclipse (voice))
Gary Anthony Williams
(Bailey Broman / Blackout (voice))
Michael Dorn
(Dr. Michael Moghson (voice))
Jonathan Mangum
(Prof. Poindexter Flowers (voice))
Tara Cardinal
(Janice Adventura / Ms. Adventure (voice))
Sonny Dyon
(Mayor Harold Wrigley (voice))
Alex Dyon
(Mike Bundy (voice))
Dean Cudworth
(Marv Clarkson / Mr. Wonder (voice))
Starr Lajoie
(Athena Adventura / Mighty Maiden (voice))