he was a warlord on his planet he was a kallesh he was hired by san hill to be his body gaurd * guy with thin head in attack of the clones*
he then got into a speeder accident orginized by san hill the only way they could brought him bak was as an andriod the only that surfied the transfusion were his brain, eyes, and internal organs, theres an offical picture of what he used to look like to go to my site http://www.freewebs.com/generlagrievious/downlods.htm hope i answred you question