Cast principale
John Stephenson
Jack Bennett 'Bionic-1' / Klunk (voices)
Jim MacGeorge
Dr. Wilmer Sharp Ph.D. 'Dr. Scarab' (voice)
Carol Bilger
Helen Bennett 'Mother-1' (voice)
Hal Rayle
Eric Bennett 'Sport-1' (voice)
Bobbie Block
Meg Bennett 'Rock-1' (voice)
Brian Tochi
Bunjiro "Bunji" Tsukahara 'Karate-1' (voice)
Norman Bernard
James Dwight "J.D." Corey 'IQ' (voice)
Neil Ross
F.L.U.F.F.I. (voice)