Master Fu is a healer and the Great Guardian of the Miraculouses. He gave Marinette and Adrien their Miraculouses to stop Hawk Moth and his villains' evil-doings. With the Turtle Miraculous, when inhabited by Wayzz, Master Fu transforms into a turtle-themed superhero.
- He is 186 years old. His longevity might be because of his Miraculous.
- He is the only known Miraculous holder to not have transformed yet.
- He is currently the only human to know the identities of Ladybug and Cat Noir because he gave them their Miraculouses.
- He also knows Rena Rouge’s identity.