He's part of Transformers Go-Bots, and not Tonka's Go-Bots/Machine Men if that's what you're thinking about. If I were to play a Machine Men Gobot, I would only select a character who's been known to survive the destruction of their universe and crossed over into the Transformers' universe and assumed a Cybertronian identity/persona (e.g. Bug Bite, Crasher/Fractyl, Pathfinder etc.)

http://tfwiki.net/wiki/Charlie_Chopper
http://www.tfu.info/2002/123/Chopper...percharlie.htm
http://www.gobotsarepurelove.com/toy...echopper.shtml