Wallopers
Wallopers are yak -like creatures that live in different parts of Ninjago . After Morro possessed Lloyd , the ninja set off to Stiix by riding the four Wallopers Misako brought them. At night, the group was ambushed by Wrayth , who turned Cole 's Walloper into a ghost . Shortly after, the ninja traveled up the Wailing Alps , where they found another Walloper. Jay and Kai briefly quarreled over whether it was a yak , goat, or cow . .