The Smasher is a breed of Xenomorph that's brownish green, as seen in the AVP arcade game.
The Smasher appears to be a special type of a Warrior Xenomorph. It's brownish-green, and its carapace has a smooth side, which is lighter colored. It also seems to be much larger than the average Warrior or Drone Xenomorphs .
Smashers, as the name states, smash into their foes. They move regularly as any other warrior, just it moves more on its legs than crawling like other warriors.