Hard Time on Planet Earth - Season 1 Episode 12 : The All American 1989

Jesse met Bill Mitchner, a young man in high school who turned out to be an exiled former member of his world's ruling Council. All leaders of a failed coup attempt had been executed, except this one, whose name was erased from the histories, and he was exiled to Earth in the body of an infant 17 years ago. He now planned to rise to power on Earth, despite the rule against exiles drawing attention to themselves. He was also willing to hurt others in pursuit of his goal. Jesse helped him see the error of his ways, and Bill and his own Control unit were recalled to their homeworld.