Grolem 13

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Grolem 13 is a boss exclusive to Rayman Revolution, located at the end of the Iron Mountains. He is the fourth and last guardian of the Four Masks of Polokus in Rayman Revolution. He fires icicles, tornados, and thundercloulds. Rayman has shoot cloulds to create a giant thunderstorm to damage Grolem 13, in order to get the final mask. The battle with Grolem 13 replaces the pirate ship part at the Iron Mountains.