In "Facing Fear With Eyes Wide Open!," as soon as Ash and Oshawott tried to obtain some Remayo Weed from Palpitoad's territory, it shocked them with Thundershock and engaged in battle. It was fished out and caught by Cilan the same time that Ash captured his Palpitoad.
In "The Club Battle Hearts of Fury, Emolga Versus Sawk!," it was used by Cilan in the second round of the Nimbasa Town Club Battle tournament held by the town's Don George. Against Luke's Larvesta, it used its powerful Scald attack to defeat it, but was then knocked out by Flamethrower.
In BW062, it teamed up with Ash's Pikachu to stop the battle between the Kami Trio. Their combination of Thunderbolt and Thundershock stood well, but they were unable to win against them.
In BW069, it was used to battle Skyla's Swanna. Despite it's Thndershock attack being 4x super effective, Swanna shrugged it off. Scald the burned it, but it recovered with Aqua Ring, and then brutally defeated him with Hurricane and Brave Bird.
In Pokémon the Movie 15: Kyurem vs. the Sword of Justice, Stunkfisk helped Cilan distract Kyurem's Cryoganal by using his Discharge to power an electric-operated train car. Despite holding them off and leading them away from Keldeo, he was easily stopped and frozen by Black Kyurem.
|Camouflage||Facing Fear With Eyes Wide Open!|
|ThunderShock +||Facing Fear With Eyes Wide Open!|
|Mud Bomb +||Facing Fear With Eyes Wide Open!|
|Scald +||The Club Battle Hearts of Fury, Emolga Versus Sawk!|
|Sludge Bomb +||Battling Authority Once Again!|
|+ indicates this Pokémon used this move recently.*|
- indicates this Pokémon normally can't use this move.
- Stunfisk is the first Pokémon Cilan was shown to have battled to capture.
- It is the only Electric-type owned by a main character not to be based on a rodent.