Koffing and Weezing, known in Japan as Dogars and Matadogas respectively, are two Pokémon species in Nintendo and Game Freak's Pokémon franchise linked through evolution. Koffing evolves into Weezing after reaching level 35. Created by Ken Sugimori, they first appeared in the video games Pokémon Red and Blue and later appear in subsequent sequels, various merchandise, spinoff titles, and animated and printed adaptations of the franchise. In Japanese, both characters are voiced by Unshō Ishizuka; in English Koffing is voiced by Michael Haigney, while Weezing is voiced by Eric Stuart.