DreamWorks Dragons

The Iron Gronckle (2x2)

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When Fishlegs and Meatlug are kicked off the Dragon Academy by Snotlout they arrive at a beach, and Meatlug eats all the rocks in sight. Fishlegs, on the other hand, eats all the berries. Soon they get a stomach ache and return to Berk to get Meatlug checked by Gobber. Fishlegs discovers that Meatlug can produce "Gronckle Iron", a lightweight but extremely strong metal. Because their slow speed had previously allowed an Outcast boat to escape, Fishlegs decides that producing Gronckle Iron is a more helpful task than flying with the other teens, until Meatlug ends up ingesting a magnetic rock, attracting all the metal in the village-including Hiccup's metal leg.