Nando Gazzolo
— Johnny (voice)
Vittoria Febbi
— Clementina (voice)
Carlo Romano
— Il Cattivissimo (voice)
Luigi Pavese
— Ursus (voice)
Willy Moser
— Smilzo (voice)
Lydia Simoneschi
— Esmeralda (voice)
Gianfranco Bellini
— Becchino Barbuto (voice)
Anna Miserocchi
— Mucca Scura (voice)
Flaminia Jandolo
— Mucca Gialla (voice)
Ferruccio Amendola
— Cavallo del Cattivissimo (voice)