Some twenty years prior to the episode, Puka was seen floating to Seafoam Island on a single wooden board when he was found by Victor, Instantly became his main Pokémon while also reigniting Victor's passion for surfing. For the next twenty years, Puka and Victor lived together side-by-side, conquering each wave.
After meeting Ash Ketchum and his friends, Puka used his powers to sense the wave, helping Victor ride the Humunga Dunga, a huge wave that only one surfer, Jan successfully conquered.
None of Puka's moves are known.
Puka is a unique Pikachu: while the rest of its species have brown eyes, Puka has blue eyes.