is the evolved form of Mallow's Steenee
. It evolved when it banged on the top of a cage that Ash Ketchum
was caught in and it learned the move Stomp as a result of its efforts.
It battled against Lana's Primarina
in the Top 16 round of the Alola League. Mallow
was going to give in as she didn't want Tsareena to keep fighting a losing battle. It didn't want to quit and it convinced her to keep on fighting and they performed the Z-Move Bloom Doom for the first time. Lana's Primarina
countered with the Oceanic Operetta Z-Move and they ended up cancelling each other out. Primarina ended up winning the match.