Juan's Seaking was used in the double battle round of his battle with Ash. It fought alongside Juan's Sealeo. During the battle it displayed the ability to use Horn Drill to deflect Pikachu's electric attacks. After defeating Snorunt with Hyper Beam, Seaking battled Pikachu and Corphish and was knocked out by Pikachu's Iron Tail.
|Horn Drill||The Great Eight Fate|
|Horn Attack||The Great Eight Fate|
|Hyper Beam||The Great Eight Fate|
|+ indicates this Pokémon used this move recently.*|
- indicates this Pokémon normally can't use this move.