Koffing is one of the thirteen Pokémon that can come out of a Poké Ball in this game. It uses Poison Gas as its attack. Koffing releases gas from the pores on its body. Any character, other than the summoner, who touches the gas takes damage, and if he/she is very close to Koffing, he/she becomes trapped until Koffing disappears.
Koffing's evolved form, Weezing, replaces it as the same type of attacking Pokémon in Super Smash Bros. Melee. Neither Koffing nor Weezing appear in Super Smash Bros. Brawl.