Golduck is a bipedal Pokémon that can reach the height of an average adolescent human. It has webbed hands and feet with digits ending in short claws, its body is a bright blue colouration and it has four horn-like protrusions on the back of its head. A small red gem rests in its forehead that glows when it uses its psychic powers.
Golduck is highly athletic and a remarkable swimmer, using its rudder-like tail to rapidly propel it through the water. It can easily out-race Olympic-level human swimmers.
- Water Pulse - A powerful blast of water that can leave the opponent dazed and confused.
- Aqua Tail - Golduck's tail strikes like a crashing tidal wave.
- Zen Headbutt - Golduck concentrates its mental energy in the gem on its head, then rams its foe. Can cause the target to flinch.
- Amnesia - A psychic ability that raises Golduck's Special Defence, as though it forgets all weakness.