Graham Phillips
Ben Tennyson
Christien Anholt
Eon
Haley Ramm
Gwen Tennyson
Beth Littleford
Sandra Tennyson
Don McManus
Carl Tennyson
Aloma Wright
Mrs. Dalton
Lee Majors
Grandpa Max Tennyson
Tyler Patrick Jones
Cash
David Franklin
Heatblast (voice)
Daran Norris
Diamondhead (voice)
Carlos Alazraqui
Grey Matter (voice)
Dee Bradley Baker
Wildmutt (voice)
Alex Winter
Constantine Jacobs
Rich Ting
Heatblast
Sab Shimono
Old Man
Robert Picardo
Principal White
Paige Hurd
Stephanie
Tyler Foden
T-J
Bianca Ruiz Brockl
Candace
