Gnarly

Gnarly is a creature created by Fairy Tooth magic from a Terrordog tooth and appears in Fairy Tale III. He first appears in a cutscene being grown by a Fairy tooth hunter and a Fairy tooth farmer, and then appears in the Tooth Fairy's house, and you must convince him to give you her wand.

After the quest, you can obtain a tooth creature yourself by giving the Tooth fairy 5 kinds of teeth. After you have given those teeth to the fairy, she will give you a pet that looks the same as Gnarly, however this pet will be called Milk tooth creature.