Iggy Koopa is the geek of the Koopa clan. He’s also crazy and demented. You don’t get to see it in the game, but it’s assumed he’s the one who built all the crazy floating airships that the kids employ. Nowadays he’s depicted as being taller and thinner with all green hair making him look even more gangly and nerdy.
Iggy’s namesake isn’t much like him at all. Iggy Pop alongside his band The Stooges created some of the rawest punk rock that ever was. He was also best friends with David Bowie, something we all wish we were. Iggy is a lot of things, rocker, junky, neighbor on Pete and Pete, but never a nerd.