The Creepy Case Of Old Iron Face

Old Ironface himself. Leonardo DiCaprio he's not

Waterskiing is fun, but investigating old prisons are not. The gang gets to do both in this episode. Skull Island, a nearby prison, is haunted by Ironface. He must've been a nasty customer, because the warden ordered an iron mask to be welded onto his face. Nasty. This dude likes to ski around with his missile/fish/whatever things and chase meddling kids.

7/10 +1, because this guy is really scary.