Garchomp, the Mach Pokémon. When it folds up its body and spreads its wings, it can fly like a jet plane at the speed of sound.
– Ash’s Pokedex
Garchomp is the pseudo-legendary Pokemon of Gen IV. The most famous one is probably Champion Cynthia’s Garchomp. Cynthia’s hair ribbons sort of look like the things on Garchomp’s head.
Dragon/Ground is a new type combination, though it still makes Garchomp doubly weak to Ice, but resistant to Rock and immune to Electric. I’m not sure why it’s Dragon/Ground though. Its design looks to be based on a shark crossed with a dragon. While the other shark-based Pokemon Sharpedo is Water/Dark, I don’t know why Garchomp is neither part Water nor Dark.
Despite its Pokedex entries saying it has wings and can fly, it’s not Flying type either, and the only Flying move it can learn is Aerial Ace by TM. It also can’t learn any priority moves, despite it being the Mach Pokemon and its Pokedex entries saying it’s fast.
It does have good Speed though. With massive Attack stat, good HP and decent Defenses, Garchomp makes a good physical sweeper. Its ability Sand Veil works well on a Sandstorm team (raises evasion in Sandstorm), and has been annoying when I fought Garchomps.