I always really liked the fact that Hulkling in the Young Avengers wasn't just another Hulk character. He's actually a Skrull in disguise. A nice approach to do something a little different. Although I think they also eventually got Geiger.

Upper torso, arms, and head were from Hyperion. Cut off the hair and resculpted it. Lower torso was from Wonder Man. Legs were from Wrecker. Sculpted on the shoulder sections, gave him a full repaint, and all done!