Jock Mahoney plays evil Coy Banton to Gordon Scott's Tarzan. Mahoney took over the Tarzan role in Tarzan Goes to India (1962).
Producer Sy Weintraub was so happy with the actors playing the baddies in the previous film, "Tarzan's Greatest Adventure" (1959), especially Anthony Quayle, Al Mulock and a young Scottish actor named Sean Connery, that he wanted to cast them in this film. However, both Quayle and Connery had more promising opportunities. Quayle was wanted for David Lean's "Lawrence of Arabia" (1962) and Connery was set for the role of James Bond in "Dr. No" (1962). Al Mulock returned to play another role in this film.
This was Gordon Scott's final film as Tarzan. Producer Sy Weintraub reportedly wanted a Tarzan who didn't look like a modern bodybuilder. At this time, producers in Italy were looking for bodybuilders with acting experience for their suddenly popular sword and sandal/mythological muscleman epics. With an established marquee name, Scott was quickly cast as Maciste and had the first of his string of sword and sandal epics completed within a year.
Sean Connery, who was in Tarzan's Greatest Adventure (1959) was offered the role of Coy Banton. He declined, as he'd been offered the role of James Bond. He assured that he'd be in the next Tarzan film, though he never did.
Two actors made a second appearance in a Gordon Scott Tarzan movie. Betta St. John (Fay Ames) was in Tarzan and the Lost Safari (1957) and Al Mulock (Martin Banton) was in Tarzan's Greatest Adventure (1959).