What is "dino-riders"

Dino-Riders is a cartoon television series that first aired in 1988. Dino-Riders was primarily a promotional show to launch a new Tyco toy line. Only fourteen episodes were produced, three of which were produced on VHS for the United States. The show aired in the U.S. as part of the Marvel Action Universe.

The series focuses on the battle between the good Valorians and the evil Rulons on prehistoric Earth. The Valorians were a superhuman race, while the Rulons were a mixture of humanoid creatures. Both races came from the future but were transported back in time to the age of dinosaurs. Once on Earth, the Valorians befriended dinosaurs, while the Rulons brainwashed them.