Matthew Starr pretended to be an earthling, but he was really the Crown Prince of the Planet Quadris. His father was overthrown by tyrants, so he was sent here to develop his telekenetic powers then go back to throw down some furious anger at his oppressors. His mentor is Louis Grossett Junior, who also pretends to be his science teacher.
As opposed to, say, Bennu of the Golden Light, who is a messenger from an alien world, a scout. Bennu is looking for his lost companion, Mira. He aids people in distress with his freaky magical amulet. You better recognize.
Alan Fawcett was the host of a show which scored pantomimers on originality, appearance and lip synch.
Quincy's understanding of forensic medicine was way ahead of it's time for prime time tv. He, Quincy, of the LA Coroner's office. He lived on a boat, was a 70s swinger, and played detective to find evidence to support his theories of unexplained deaths. This did not endear Jack Klugman to the po-po.
Greg Evigan played the independent trucker BJ McCay. He was a medevac pilot in the Nam and, somehow, managed to smuggle a chimp named Bear back with him. Living in a truck has it's advantages, as he croons in the theme song, "Best of all, I don't pay property tax." Sheriff Lobo was always on his ass for something or other. Quite possibly this was tax related.
Robert Gulliame -- who insists that he is not Haitian/caribeat, played an upwardly mobile household executive-budget director-Lt. Governor, Benson DuBois. (*snickers* DuBois?) His plight mirrored the rise of African Americans throughout the 70s, more accurately than Good Times (the low estimate) or The Jeffersons (an inflated estimate of the African American plight). He bantered with the Wagnerian housekeeper Gretchen Krauss, played so ably, ironically by the Nebraska-born Inga Swenson. That freaky kid Missy Gold with the big eyes and the adult dialogue kind of wierded me out. She harshed on my "I'd Like To Buy The World A Coke" 70s vibe.
So, now you know.