So, I have a grass Koffing and a psychic Gulpin. Error, misprint, or bad card logic?
Pleaselog inorregisterto add a comment.
Prior to the Diamond/Pearl Gen IV sets, Poison type Pokemon were released under the Grass typing for the TCG. Starting with Diamond/Pearl, they moved over to the Psychic type. This was likely done so that cards under the Grass type were more uniform in having a Fire weakness, in order for them to balance out the colors a bit and provide a more coherent color identity.
Bad card logic. There are many cards like that. For example, I have a Larvitar Fighting type, Swellow Fire type, and Garbodor Psychic type. I believe the general rule for types that don’t have an energy are Rock and Ground to Fighting, Flying to Electric or Normal, Poison to Psychic, Ghost to Dark, and Ice to Water.
Source: my own cards