One of the Foreshadowing Quest live in Fortnite focuses on CB radios. These special challenges have players interacting with new items of interest and unraveling the mystery of UFOs and aliens suddenly circling around the island (figuratively for now). In this specific challenge Epic says to "

Pokemon Legends: Arceus added ancient evolutions for Pokemon we've known for years, including Ursaring. Naturally, that also means evolution items for these evolved forms. Thanks to the Peat Block, Ursaring can evolve into an Ursaluna. Sure, you get a companion Ursaluna… [...]