In a distant galaxy, Jayce's father Audric had created a plant to solve the hunger problem. His plants get mutated by space radiation which turns them into the evil Monster Minds. Audric fled and the only salvation is a magic root. The root is split in two with the other half going to Jayce. Jayce goes in search for his father with the help of the wizard Gillian, Flora with her fish mount Brock, robot squire Oon, and brigand Herc Stormsailor with his spaceship looking for riches. The Monster Minds are led by Sawboss and they can transform into fighting machines.
I do remember the opening and the plant-machines. I don't really remember watching the show back in the day. I do recall Oon although it's the ill-fitting nature that makes him memorable. Watching it now as an adult, one can see the convoluted, frail seams in the story construction. There is a lot of Star Wars in the writing. Mattel had the Wheeled Warriors toys and decided to create a cartoon to support the line. It's the Master Minds versus the Lightning League. Obviously, somebody jerry-rigged the Star Wars characters into the toys. It doesn't make it bad by definition. Transformers and G.I. Joe are examples of making a series based on toys and those worked. The pilot tries to jam a lot of info to set up all the characters. I'm not going to denigrate anybody's childhood memories but the writing doesn't hold up to an adult's examination. Mattel did produce 65 episodes although it only ran for one season.