Pleaselog inorregisterto add a comment.
To make a film, the player must first choose whether to use a rental Pokémon or a Pokémon from their own party. However, the player is not allowed to use their party Pokémon in a film until they have filmed a Good Ending for it.
Soo…you need to use the rental Pokémon first, andthenyou can use your own Riolu (or any pokémon for that matter).Little tip, your Pokémon will only gain a star animation if they create astrange ending
If the player manages to create a strange ending with their own Pokémon, their Pokémon will become a star and will be given a special entry animation, much like when a Shiny Pokémon is sent out.
Source:https://bulbapedia.bulbagarden.net/wiki/Pokéstar_Studios