As it turns out, James Doohan ditched the show so he could start filming Star Trek the Motion Picture. Good move, James. When Scotty beamed out, he was replaced by John Russel who was forced to wear blue makeup for his tenure on the show. Apparently blue makeup constitutes and alien.
And last but not least, who was the star of Jason of Star Command? It was actually Craig Litter, famous for saying, “Pardon me. Would you happen to have any Grey Poupon?”