This Walrein is an ice/water-type Pokémon owned by Shelly.
Shelly sent a Walrein, along with one of the grunts' Walrein to battle Team Magma. However, Walrein was defeated by Team Magma's Golbat's Air Cutter.
At Monsu Island, Shelly and her grunts sent Walrein, who launched Water Gun on Team Magma. Tabitha and his grunts sent Mightyena, who counterattacked with Shadow Ball on Walrein.
- Using Water Gun