What is the episode of adventure time when Finn has all mini characters?

The episode of Adventure Time when Finn has all mini characters is "The Vault". In this episode, Finn and Jake find a vault filled with miniature versions of various characters from the show, including Lady Rainicorn, Lumpy Space Princess, and Marceline the Vampire Queen. Finn is able to control these characters using a remote control, and he uses them to help him and Jake escape from the vault.