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

Antoinette Spolar