Psyduck, known as Koduck in Japan, is a Pokémon species in Nintendo and Game Freak's Pokémon franchise. Created by Ken Sugimori, Psyduck first appeared in the video games Pokémon Red and Blue and later in sequels. From Wikipedia
The tie-in to Netflix’s stop‑motion series centers on limited-time bonuses and research that spotlight a costumed Psyduck.