The Rotom possessing a stereo in Pokémon Pokopia is called DJ Rotom.
DJ Rotom is one of the special Pokémon encountered as Ditto restores the abandoned world. The character’s identity follows Rotom’s established ability to possess electrical appliances, but Pokopia places that familiar concept in a musical setting by giving Rotom control of a stereo system.
The name is descriptive rather than an ordinary Rotom form such as Heat Rotom or Wash Rotom. That distinction matters because the game presents several memorable named characters with altered roles, including Chef Dente, Tinkmaster, Peakychu, and Smearguru.
DJ Rotom contributes to Pokopia’s community-building atmosphere. Instead of serving as a Pokédex or phone interface, this character is associated with music and the stereo, reinforcing the game’s emphasis on decorating spaces and making them lively.