Tubby is a Teapot Spirit and an open-world NPC that appears in the Serenitea Pot (Genshin Impact) in Genshin Impact. Interacting with her allows players to access many features of the Serenitea Pot system.
She takes on the form of a large blue Finch with orange and white markings around her beak. Her design changes depending on the player's Trust Rank, but she initially resides on a floating tea Saucer and later inside of a floating blue and white Teapot with it's lid being worn as a hat.