I don’t think he’ll be a Yokai. Instead, I believe Garling will be a Fenrir, a wolf from Norse mythology. Garling is “moon-shaped,” and the werewolf is a “moon” creature. Fenrir is a monstrous wolf in Norse mythology, and Saturn has a moon named “Fenrir.” Fenrir has two opposite sons—Hati and Skoll, which I think could represent Shanks and his brother.