- Voice actor: Michael Haigney (both English and Japanese)
Koffing is a round, limbless purple Pokémon filled to the brim with toxic gases. Several crater-like protrusions on this Pokémon's body give it the resemblance of a naval mine or a meteorite. Koffing has a skull and crossbones below its blissful face. Koffing has been considered to be related to Grimer, who is also a purple Poison-type Pokémon that associates with pollutants. Koffing may also be related to Drifloon, who is also a floating, round, purple, "X"-bearing Pokémon with a tendency to explode. Koffing's height is 2'00" and weight is 2.2 lbs.
Koffing spews out poisonous gases whenever it gets upset. On the other hand, Koffing exhales fresh, clean gases whenever it becomes happy or overjoyed. Although Koffing's gas is more commonly attributed as being poisonous, the gases may also cause coughs, sniffles, and teary eyes. Koffing has also been known to explode from over inflating its body. Koffing is also capable of launching Fire and Electrical attacks. Koffing's gas can be also ignited by fire or electricity, which suggests that it also contains flammable hydrocarbons.
If Koffing becomes agitated, it raises the toxicity of its internal gases and then jets them out from all over its body. Koffing is prone to overinflating its round body before it self-destructs. The higher the temperature, the more gas Koffing concocts.
Koffing are a very common sight around burned down buildings, abandoned buildings and power plants. Volcanoes also provide a suitable habitat for them.
- Main article: Pokémon food
Koffing mainly eat rotten kitchen garbage.
A Coordinator used a Koffing in New Plot, Odd Lot!.
In Tag! We're It...!, Dawn and Conway battled against a Trainer who used a Koffing, alongside his partner who used a Scyther. The Koffing had several powerful attacks like Sludge Bomb, Thunderbolt, and Gyro Ball, but Conway's Slowking and Dawn's Piplup were able to defeat it.