The End.

[retrolinkx]

In Metal Gear Solid 3, you hear about a legendary sniper called "The End" he apparently can never miss a shot, and will always kill it's target no matter what, from any distance without a spotter.

What isn't known is, that his parrot is his spotter, if the player shoots the parrot in the battle, he has a harder time shooting you since his parrot is his spotter, he also becomes enraged and angry because of it.