Mallow's Tsareena/Games/Ash's Classmates' Partner Pokémon

A Japanese event distributed an in-game representation of Mallow's Steenee, along with Kiawe's Turtonator and Lillie's Alolan Vulpix via serial code and local wireless. The serial codes were available at stores in Japan from June 17 to July 25, 2017, and could be used until July 4, 2017. The local wireless were available at stores and Pokémon Stores in Japan from July 22 to August 13, 2017.

The same Steenee was distributed to players who inserted the common serial code ALOLASTEW762 from September 19 to October 31, 2017. The serial code was revealed on September 19, 2017 during the debut of brand new episodes on at 6:00 pm, on  at 7:00 pm, and on  at 6:45 pm. The serial code was revealed again on September 26, 2017 on Animax.