Jayce and the Wheeled Warriors (1985)

S1E4 Silver Crusaders

The Lightning League stumbles upon the Monster Minds, who are poised to conquer a planet where vegetation has grown to immense proportions. Concerned about facing a legion of colossal Monster Mind drones, they set out to find allies for their battle. However, they encounter a native group of knights who are incredibly unfriendly toward outsiders.