I think you're talking about the version with the one arm. It was made from an edit of that one guy's Goku model. I can't remember who made it ... but he made good models. I believe people made a lot of battle-damaged models out his one Goku, and often used its body for Gohan. Maybe it was Smo? No no, wait. He had an Asian name I think. Rojin? Z something, maybe? :-/