Jason King (TV series) the X-Men comics, the character of Jason Wyngarde (aka Mastermind) was partially inspired by Jason King and Peter Wyngarde. Mastermind had first appeared in the 1960s, but took on the appearance and identity of Jason Wyngarde in the build-up to the X-Men's first confrontation with the Hellfire Club in the late 1970s. Wyngarde had played the leader of another Hellfire club in "A Touch of Brimstone", an episode of the popular TV series "The Avengers", in which Diana Rigg appeared in a leather costume that Jean Grey adopted as the Hellfire Club's Black Queen. He is also one of the
Jason King (TV series) as part of a team of investigators. In "Jason King" he had left that service to concentrate on writing the adventures of Mark Caine, who closely resembled Jason King in looks, manner, style, and personality. None of the other regular characters from "Department S" appeared in this series, although Department S itself is occasionally referred to in dialogue. In the course of visiting international locations as part of his research, or through being summoned by people needing assistance, King would be frequently embroiled in adventure stories featuring glamorous women, exotic locations (for the era), menacing villains, political turmoil, or espionage