Billy Billions, le rival d'enfance de Ben, transforme Ben et Rook en enfants.
Ben Tennyson (voice)
Young Ben Tennyson (voice)
Rook Blonko (voice)
Grandpa Max (voice)
Cannonbolt / Heatblast / Khyber the Huntsman (voice)
Armodrillo / Fourarms (voice)
Dr. Psychobos / Diamondhead / Grey Matter (voice)
