Grimmel the Grisly is the overarching antagonist of the DreamWorks animated How to Train Your Dragon mainstream franchise, serving as the unseen overarching antagonist of How to Train Your Dragon, the unseen main antagonist of Book of Dragons, the unseen overarching antagonist of DreamWorks Dragons, How to Train Your Dragon 2 and Dragons: Dawn of New Riders, the main antagonist of How to Train Your Dragon: The Hidden World and one of the two posthumous main antagonists (alongside Drago Bludvist) of How to Train Your Dragon Homecoming.