Gunner Guy

The Gunner Guy is a military Snifit unique to the Koopa Troop. They are used to guard extremely important locations, such as Bowser's Castle. Gunner Guys appear only in Mario & Luigi: Superstar Saga. Their only attack is shooting a bullet at Mario or Luigi. Sometimes, a Shy Guy clad in army camouflage would help it. The Shy Guy would push the Gunner Guy up to its target before firing, giving the Mario Bros. less time to react.

Weakness
they have big long gun barrels instead of short ones that most shy guy or snifits have. to hold up it's long gun it legs on the end of the gun as well, this unfortunately gives it a handicap for being able to walk and not topple over, so a shy guy has to help it with that one.