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 uses his powers to help Victor ride the Humunga Dunga, a huge wave that only one surfer, Jan successfully conquered.
Puka is a unique Pikachu: while the rest of its species have brown eyes, Puka has blue eyes.
Puka also has the ability to sense a fast-approaching wave, causing his eyes to glow blue and his body to glow as well.