The Undead Psyduck is a zombified Pokemon under the control of a Gastly. It is sent to eliminate Red, but after Red deduces what is controlling the zombie, Red and Saur manage to defeat the Gastly and the undead Psyduck was once again reduced to a mere carcass.
- The entire scene in which the undead Psyduck appears is notably dark, and has even become one of the most memorable moments in the manga to date.
- It isn't known what the Psyduck died from in the first place. However, because of its rib cage being exposed on one side, it can be assumed that it died because of an injury it sustained, possibly during a Pokemon battle. However, it could just be that his flesh had decayed over the years.