Omi used a dremel tool to drill a second set of arm holes in the torso. Although Goro's legs come courtesy of a Slave Leia figure, he's all man up top (Dastan specificially). Colonel Dovchenko from Indiana Jones provides the noggin. Finally the hairpiece is a BrickForge original. The ponytail should be available soon on their store.
(Via ChocoBrick's Customs' Flickr stream)