Koffing is a spherical Pokémon filled with toxic gasses. It has vacant eyes and a wide mouth that usually has two pointed teeth in the upper jaw. However, a full set of teeth has been seen in the anime. Below its face is a cream-colored skull-and-crossbones marking. Several crater-like protrusions, which usually release a yellowish gas, cover this Pokémon’s body. Its purple skin is very thin, and over inflation can cause it to explode. Koffing creates gases within its body by mixing toxins with garbage, and produces more gas in higher temperatures. Koffing is most often found in urban areas.