Pictured here are the characters I've introduced thus far based on Velocitron, the Speed Planet. I intend to have more stuff on there during Arc Three, and introduce a few more characters based on that particular planet before I'm done.

Rear, Left to Right:
Override (Revelations, 12-52)
Dirt Boss (Interlock, 14-52)

Front, Left to Right
Clocker (Myths and Legends, 16-52)
Brakedown (Interlock, 14-52)