The Iron Gronckle is the second episode of Dragons: Defenders of Berk and the twenty second episode of the DreamWorks Dragons television series. It was first aired on Cartoon Network September 26, 2013. The plot focuses mainly on Meatlug and Fishlegs as terrible trouble arises when Meatlug eats magnetic rocks and produces Gronckle Iron. It is preceded by Live and Let Fly and is succeeded by The Night and the Fury .
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