• English / United States: Lusamine's Clefable
• Japanese / Japan: ルザミーネのピクシー
• Japanese (Romanized) / Japan: Lusamine no Pixy
• Japanese (TL) / Japan: Lusamine's Pixy

Lusamine's Clefairy was talked about by Lillie and her mother Lusamine in an argument. Lillie wanted to raise it without evolving it because she preferred it that way as it was cuter than Lusamine's Clefable. Lusamine evolved it into a Clefable because it was her Pokémon and not Lillie's.

Out of all my Lillie's mother's Pokémon, Clefable was her closest friend. While in the Ultra Deep Sea, it was sent out to battle against Lillie by the Ultra Beast Nihilego. Ash's Lycanroc (Dusk Form) stayed back to help battle Lusamine's Clefairy with Lillie's Vulpix (Snowy). As Lillie is not very good at battling, she decided to battle you it her own way by showing it the Clefairy doll the two of them used to play with. This help get it to snap out of Nihilego control.

It has the special Ability Magic Guard which allowed it to cross the poison river in the Ultra Deep Sea with Lillie holding on to it.