Koffing (Japanese: ドガース Dogars) is a Poison-type Pokémon. It evolves into Weezing.
James of Team Rocket owned a Koffing that first appeared in Pokémon Emergency!. It evolved into Weezing in Dig Those Diglett!
In Rocking the Virbank Gym! Part 1, Roxie owns a Koffing she uses against Ash.
In A Poached Ego!, a poacher called Rico had gathered quite a bunch of Koffing, but was freed and sent with James' Weezing and Jessie's Arbok to be safe with a bunch of Ekans.
A Coordinator used a Koffing in New Plot, Odd Lot!.
A Koffing was seen in a Pokémon Cosplay Contest in All Dressed Up With Somewhere To Go!.
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.
A Koffing made a brief cameo appearance in Destiny Deoxys and Giratina and the Sky Warrior.