Spinning minigears are rotated at high speed and repeatedly fired away. It is dangerous if the gears don’t return
– Pokemon White Pokedex
Klang is the middle evolution in the only pure Steel evolution family. In Japanese, Klang’s name is “Gigiaru”. One of Klink’s gears grew bigger when it evolved into Klang; the gear that didn’t get bigger gets to be fired away. I like the faces on the gears.
Stat-wise, it has good Defenses and decent Attack, though its Speed is rather slow. However, one of its signature moves, Shift Gear, enables it to raises its Speed by 2 stages (and its Attack by one stage).