These Hakamo-o made their debut where they along with Jangmo-o and their leader, Totem Kommo-o. When Lillie and Gladion attempted to go to The Altar of the Sunne, They, the Jangmo-o and their leader Totem Kommo-o attempted to stop the two humans from going any further. Lillie and Snowy battle the Jangmo-o and Hakamo-o with Powder Snow, while Gladion and Silvally deal with the Totem Kommo-o. After one of the Jangmo-o disarmed Gladion's Fairy-type Memory Disc, Lillie and Snowy attack them with another Powder Snow, while freezing the ground. The Ice Battlefield allows Gladion and Silvally skate across them with ease, and retrieve the Memory Disc that landed right underneath Totem Kommo-o. They only watch as Silvally defeats Totem Kommo-o with Multi Attack.
They along with Jangmo-o reappeared in Revealing the Stuff of Legend! where they attacked Professor Burnet and her Munchlax. Professor Kukui and his Braviary arrived to save them. They were easily defeated by Braviary's Brave Bird.
None of Hakamo-o's moves are known.