- Voice actor: Rikako Aikawa (both English and Japanese)
Golduck have webbed hands and feet, ending in broad flippers, which they use to swim in rivers and lakes, much in the way as a duck would move. Their blue bodies are especially adapted to have a great hydrodynamic shape, and they have long tails with which they use to steer. Golduck are sometimes mistaken for the Japanese monster and physical inspiration for Golduck, the Kappa due to their bluish color, general body shape, and webbed hands and feet. Golduck also have red irises, a small, red jewel on their foreheads, and four spikes on their head. Although Golduck have no wings, only webbed hands and feet, it is still deemed a duck instead of a platypus. Its height is 5'07" and weight is 168.9 lbs.
Golduck are fast swimmers, out-swimming even the most athletic of humans because of their frog-like webbed hands and feet. The gem on their foreheads glows when they use their psychic powers, and occasionally when they swim at full speed, suggesting that they sometimes use those powers to swim. As shown in the Sonic Pokémon Adventures manga, after evolving from Psyduck, Golduck have greater control of their powers. They have the ability to read minds or even give knowledge to their Trainers and fellow Pokémon through telepathy.
It has been noted that Golduck will often join swimmers when training. They are sometimes found rescuing people lost at sea from danger, their heads shimmering from the telekinetic powers that allow them do so. The headaches that ridiculed its pre-evolution form, Psyduck, don’t trouble Golduck, allowing them to have full use of their formidable mental powers.
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A Golduck was owned by a Trainer named Katie in Shocks and Bonds. It defeated Ash's Torkoal after Venomoth disabled Torkoal's Iron Defense attack. In the following episode, Katie's Golduck was defeated by Ash's Corphish, despite being under confusion.
In Bye Bye Psyduck, Misty thought that her Psyduck had evolved, but it turned out that the Golduck was just some wild Pokémon that happened to act like Brock because of the Golduck's 'showing-off' attitude towards girls.
A Golduck was seen in Octillery The Outcast, under the ownership of an unknown Trainer.
A Golduck appeared in Dueling Heroes.
A Golduck appeared in Abandon Ship!.
A Golduck appeared in the opening of Lucario and the Mystery of Mew.
Multiple Golduck also appeared in The Power of One.
Golduck, Duck Pokémon. The evolved form of Psyduck. It makes its home in lakes, and is very adept at using its webbed hands and feet which allows it to swim faster than a gold medalist, making it the fastest swimming Pokémon of all.