Koduck is the Japanese name for Psyduck, a recurring Pokémon in the Pocket Monsters series. It is a yellow, duck-like Pokémon known for its constant headaches and confused behavior. When its headaches become intense, it can accidentally unleash powerful psychic energy. In the series, Koduck often appears as a comedic character, but it can also play important supporting roles in helping trainers and friends during difficult situations.