Clefable physically debuted in Faba's Revenge!, when Lusamine sent her out to battle Nihilego, only to be recalled when her energy had been drained. When Lusamine was later subjected to Nihilego's control, Clefable was sent out to stop Ash and Lillie in Rescuing the Unwilling!. She briefly battled Snowy and Ash's Lycanroc before Lillie was able to break Clefable free of Nihilego's control by reminding her of their past together.
In Show Me the Metal!, Clefable was cleaning the Ultra Guardian's base when she came across a group of Meltan that began eating anything made of metal. Clefable attacked the Meltan, causing them to flee up to the Pokémon School, but they later returned. In the following episode, Clefable learned of their taste for metal and went on to train them to follow her around. Later, she had the Meltan perform a few tricks for Kukui and his class.
Personality and characteristics
Clefable has a friendly and playful personality, as seen during Lillie's flashbacks. Clefable has a close bond with Lillie which allowed her to break free from Nihilego's control. Clefable's friendship with Lillie made it the perfect choice of Pokémon to be stationed at the Ultra Guardians' base. Clefable is a thoughtful and helpful Pokémon, as shown in the Poké Problem extra scene for SM089, where she gave Professor Burnet a cup of Komala Coffee after all of the hard work she had done on studying Necrozma.
Later, it and the rest of Lusamine's team was used to battle a Naganadel befriended by the Ultra Recon Squad so Lusamine could catch it. Clefable was knocked out after being shot by Naganadel's poison.