Gastly
The Gas Pokémon
Type: Ghost/Poison
Official Registration #: 92
Entry: A spectral pokémon most prevalent in graveyards and pokémon burial sites throughout Kanto, Johto, and Sinnoh. Contrary to popular belief, gastly are not the souls of deceased pokémon. Rather, they spawn naturally through either breeding or, in sites that host high volumes of cremation, a mixture of smoke, ash, the noxious gases of decomposition, and a pokémon’s final burst of auric energy. The gases that comprise a gastly’s body are, as mentioned a moment ago, highly noxious to a human and may induce a state of lightheadedness and euphoria shortly before suffocation. Some humans keep gastly who are trained to envelope a human but release them the moment they arrive at the edge of unconsciousness, all expressly for the high induced by this pokémon … not that the author would know anything about this, of course.
Haunter
The Gas Pokémon
Type: Ghost/Poison
Official Registration #: 93
Entry: The evolved form of gastly, by battle experience. Like its evolutionary predecessor, haunter’s body is comprised entirely of concentrated, noxious gases. However, these gases are compressed to the point where they hover just at the edge of their liquid state, enabling haunter to have a more tangible form than gastly. Additionally, as the inner materials of its form are compressed to the point where they begin to condense, haunter also has the ability to “touch,” as well as the ability to inflict the paralytic effects of its composition by touch. Thus, when the pokédex informs you that being touched by this pokémon’s hand causes a victim to experience unrelenting shuddering or that being licked by this pokémon’s gaseous tongue results in a full-body paralysis, rest assured that there is an entirely scientific explanation behind all of this which is rooted in equally comforting levels of chemistry.
Gengar
The Shadow Pokémon
Type: Ghost/Poison
Official Registration #: 94
Entry: The evolved form of haunter, via trading. This spectral pokémon possesses the ability to pass into the shadows of living beings, where it waits until nightfall to suck away their life energies and body heat. Not much else is known about gengar, unfortunately, except for one other note: should you ever attempt to study this with the two most capable researchers you know short of Professor Oak, never attempt to study it by inviting it to perform any of its other abilities unless you have not, within the past half an hour, consumed more whiskey than is reasonable for a professional. It apparently also has the ability to possess humans and the tendency to be creative in its interpretations of requests.