This mask was a personal project designed after Mephisto’s avatar wolf form, from Diablo IV in October 2023. It features a 3dprinted base mask with blinking eyelids and articulated jaw, and was finished with paints, permanent rubber blood and faux fur.
You can buy this mask or a similar like it from my store here. A new mask would be created, as this one was already sold. You can also purchase the base mask here.