Fel Nilfheim is a legendary Fenrir, a powerful and ancient magical beast in the anime series 'Tondemo Skill de Isekai Hourou Meshi' (Campfire Cooking in Another World with My Absurd Skill). As Mukouda's familiar, Fel is fiercely protective, highly intelligent, and has a voracious appetite for delicious food. He plays a crucial role by providing both strength and comedic relief, often demanding gourmet meals in exchange for his protection. Fel's presence elevates Mukouda's status and ensures their group’s survival in the dangerous fantasy world.