Role in World of Light
As Jotaro is downloadable content, he does have a proper role in World of Light; instead, he is available when 20 characters have been freed from Galeem's control. If a preexisting save file meets these requirements, Jotaro will immediately be available for use upon loading it.
Spirits
Jotaro's Fighter Spirit can only be obtained in the shop for 500 coins, as he does not have a Classic Mode route, and it only shows up when Jotaro has been downloaded. Unlocking Jotaro in World of Light allows the player to preview the spirit below in the Spirit List under the name "???". As a Fighter Spirit, it cannot be used in Spirit Battles and are purely aesthetic. Each Fighter Spirit has an alternate version that replaces them with their artwork in Ultimate.