Episode Title:Bad Moon Rising.Episode Description:Fishlegs, Gobber, and the riders are testing a new target made from Gronkle Iron, which Fishlegs learned the recipe for on Ryker's ship, when Tuffnut appears with a strange bite mark. Gobber believes it to be the Lycanwing, a mythic dragon whose bite can turn humans into vicious dragon hybrids, and Snotlout preys on Tuffnut's paranoia making him believe he will become a Lycanwing by the next full moon. Ruffnut tries everything from having Snotlout bitten by other dragons and reasoning with him as he is about to fall off a cliff, and Hiccup and Fishlegs reveal the Lycanwing legend was invented to protect a pair of Dragon Eye lenses hidden on another island, but Tuffnut is only convinced when Snotlout appears and states he was actually bitten by a wolf, which bites him as well.