Agent.Greenstone is Agent.Firestone's partner. Unlike Agent.Firestone he his idiotic and has no clue on what is going on around him at times. But he appears to be faster than Agent.Firestone on Epic Racers.
Bio:"Agent.Greenstone and his partner Agent.Firestone where set up on a mission to win Epic Racers.If they pass the mission, they can go on vacation to hawaii.With your help, you can make them win has champions of Epic Racers
- Unlike Agent.Firestone, Agent Greenstone is more faster than Agent.Firestone on Epic Racers.