Katz are recurring characters in the Tales series.
Tales of Symphonia
Tales of Symphonia: Dawn of the New World
in Tales of Symphonia: Dawn of the New World, Katz possess three important roles: the first is allowing the party to choose which monsters they want to acompany them, the second is cooking that allows the monsters to grow and evolve into new classes, and the third is allowing Emil Castagnier and Marta Lualdi to take missions from clients from around the world. Such locations are the Dwarves' Ore Mine, Sandy Windy Cave, Volcanic Cave, Frozen Crevasse, and the Twilight Palace, which can not be accessed via the World Map. The Katz still live in Katz Village.
Tales of the Abyss
Tales of the World: Narikiri Dungeon 3
Tales of Graces
In Tales of Graces, there is a place known as Katz Korner, which is based on a small theme park and is inhabited solely by Katz.