Mighty Robots, Mighty Vehicles! Perhaps taking inspiration from the Transformers, the GoBots are a group of robots from GoBotron who could transform into cars. The Guardian GoBots are charged with protecting the Earth from the schemes of the Renegade GoBots. Challenge of the GoBots was produced by Hanna-Barbera and Tonka. It aired in 1984 and was syndicated in 1989.