If KOFFING becomes agitated, it raises the toxicity of its internal gases and jets them out from all over its body. This POKéMON may also overinflate its round body, then explode.
Sapphire:
KOFFING embodies toxic substances. It mixes the toxins with raw garbage to set off a chemical reaction that results in a terribly powerful poison gas. The higher the temperature, the more gas is concocted by this POKéMON.
Fire Red:
Its thin, balloon-like body is inflated by horribly toxic gases. It reeks when it is nearby.
Leaf Green:
Because it stores several kinds of toxic gases in its body, it is prone to exploding without warning.