Dino-Riders premiered in syndication in September 1987. This series is about the Valorians, a race who are followed to Earth's past by the evil Rulons who want to destroy them. When Krulos wasn't trying to get the S.T.E.P. to return to his time, he was trying to "brain box" stronger dinosaurs. While the Valorians were rising to meet his attacks, they had to also resolve there own interpersonal problems in between.