This wild Goldduck made its major role in the episode Bye Bye Psyduck, as Misty mistakes that her Psyduck has evolved as she happily hugs it. As the battle between Marina and Misty continues, Misty uses Golduck in battle as he executes both Confusion and Psychic attacks in battle against Marina's water Pokemon. As the waves twisted into an inverted whirlpool, Golduck jumps in time to avoid the Magikarp submarine and also shown as a fast swimmer overtaking Marina's Starmie.
Golduck manages to jump out of the water and manages to thrown the Team Rocket into the beach with its Psychic abilities.
When Marina is in endangered with her Pokemon thanks to Jessie's Arbok, Golduck is now seen walking up into the water. It manages to block Arbok's Poison Sting with a Barrier then slams it into the air with Psywave. Team Rocket manages to escape from their sub as Golduck destroys it with a Hyper Beam to send them flying and blasting off. As the sub burns it manages to protect Marina and her Pokemon with a Barrier.
After the incident, the fight between Misty and Marina is now resumed and Misty has emerged as the winner due to Golduck manages to hit Starmie with a Hyper Beam despite being block by the Lightscreen before it shatters to make a direct hit. Afterwards, Misty notices her Psyduck comes out of the water and knowingly that the Golduck she uses is a wild Pokemon and notices three girls are walking in the beach and tries to impress them by showing off some muscles. Marina realizes this that this Golduck is just showing off in front of the girls and Misty then says "It's just a Pokemon version of Brock.", visibly shattered.
|Confusion||Bye Bye Psyduck|
|Psychic (move)||Bye Bye Psyduck|
|Water Gun||Bye Bye Psyduck|
|Disable||Bye Bye Psyduck|
|Hyper Beam||Bye Bye Psyduck|
|Fury Swipes||Bye Bye Psyduck|
|+ indicates this Pokémon used this move recently.*|
- indicates this Pokémon normally can't use this move.