Hardest Boss You Ever Faced

So, you probably have faced bosses if you play different games. A wide plethora, ranging from a noob to an impossible legend.

What's the hardest boss you faced?

Name: Gharnef (H5 Mode)
Game: Fire Emblem: Shadow Dragon
Picture:
Why He is Hardest: On H5 Mode of Fire Emblem, he is very strong. And, for those of you who play Modern Warfare 2, let me put it like this. Try Tactical Knifing the Juggernaut in Museum Mode.
Basically, only one weapon can kill him, and there are two fakes, and a bunch of minions.


Who is the hardest you faced? Any games allowed.

This guy.

That thing. It's called Man-at-legs, and it was a reeeeeeally hard boss in Pikmin 2. If you're familiar with pikmin, you know that most enemies crush or eat your little pikmin. This thing shoots them with a machine gun. Not cool. Took me like 10 tries to beat, and it killed around 1,000 of my pikmin. (that's a lot O-O)

This very very scarey thing