Daryl Sabara

as Rex Salazar / Heatblast (voice)

as Heatblast

as Heatblast / Omni-Naut Heatblast (voice)

as Matt

as Stoner

as Chips

as Edgar Rice Burroughs

as Rex Salazar (voice)

as Juni Cortez

as Clark Peterson

as Julio

as Apprentice / Caroler / Beggar / Peter Cratchit (voice)

as Kyle Clayton

as Jason

as Nathan

as Doogie

as Benjamin Fiedler

as Hero Boy (voice)

as Juni Cortez

as Juni Cortez

as Juni Cortez