Defenders of the Earth was a 1986 cartoon that ran for 65 episodes. It featured three of King Features Syndicate comic strip characters together acting as a team. Flash Gordon, The Phantom and Mandrake the Magician. It was produced in conjunction with Marvel comics – they did a tie-in comic series and Stan Lee wrote the lyrics for the opening song.
The plot had Ming the Merciless attacking the Earth and killing Flash Gordon’s wife. Flash, The Phantom and Mandrake are joined by their offspring and Mandrake’s friend Lothar whose action figure described him as a Caribbean ninja. In the cartoon he was just really strong and a mechanical genius. Together they fight Ming and a variety of villains.