- Danny Wilde (Tony Curtis) is a rough diamond, educated and moulded in the back slums of New York City, who escaped by enlisting in the U.S. Navy. He later became a millionaire in the oil business. (Curtis himself suffered a tough childhood in the Bronx, and served in the US Navy. He was 46 when he made The Persuaders, but performed all his own stunts and fight sequences.)
- Lord Brett Sinclair (Roger Moore) is a polished Harrow and Oxford educated English aristocrat; a former British Army officer and an ex-racing car driver, who addresses his comrade-in-arms as "Daniel".
Yes, it was great fun doing The Persuaders, despite Tony Curtis. [laughter] I'll tell you a funny story about that:
- "Tony was on pot at the time, and I used to have to say 'Oh, go and have a smoke'm', because he always had some gripe of some kind, and, one day, we were shooting on the Croisette, in Cannes, and we’d been roped off our little thing, and there were crowds all around watching us film and everything, and Tony Curtis came down to do his scene and he was just carrying on at the wardrobe saying, 'You didn’t do this, and you should have done that... and in Hollywood you would have been fired....' And dear Roger Moore walked over, took him by the lapels, looked him straight in the eyes and said, 'And to think those lips once kissed Piper Laurie'. [laughter] Well, the whole of the Croisette collapsed, the unit collapsed, and, I must, say even Tony had to laugh, but we were asked to do another... we got the award that year for the best TV series, I think it was, and they wanted to do a repeat, and I remember Roger saying, 'With Tony Curtis, not on your life', and he went on to become James Bond, so he did all right."—Val Guest, Director