Ray Danton

as Mr. O'Meyer (as Raymond Danton)

as Yellow Shirt

as Perry

as Prof. Jack Dunn

as Lucky

as Bryan Cooper / Superdragon

as Fred Linden

as Capt. Frank

as Jerry Black

as Jack 'Legs' Diamond

as Sayapi, Gall's Nephew

as Oscar Wetzel

as Stanley Belmont

as Roy Turner

as John Conrad, alias Johnny Salvo

as David Tredman

as Little Big Man