Storm Dragon

The Storm Dragon is mentioned only once in the Book series, in "How to Ride a Dragon's Storm". Madguts the Murderous, leader of the Murderous Tribe, does not speak (he speaks by proxy through Gumboil). There are various theories as to why he doesn't talk, including: "Some say he lost his tongue wrestling a Storm Dragon with his bare hands." The Storm Dragon is not mentioned again, nor is any description or information given.