Fou is a mysterious and adorable creature from the Fate/Grand Order series. Initially appearing to be an ordinary animal mascot, Fou is later revealed to have a deeper connection to the series' lore. Known for its playful and mischievous behavior, Fou accompanies the protagonist throughout their journey. Despite its small size and cute appearance, Fou possesses extraordinary powers and insights, hinting at a significant past. This enigmatic character provides emotional support and occasionally comic relief, while its true nature adds an intriguing layer to the overarching narrative of Fate/Grand Order.