Games that the last boss is the hardest.

[chromewarriorXIII]

Legend of Dragoon. Melbu. Freaking. Frahma.

This. A thousand times over. Hardest boss I can think of off the top of my head, harder even than the one in Borderlands.

Really? I didn't find the Borderlands boss to be very hard. All you have to do is hide behind one of the pillars and pop out and shoot it every once in a while. If you stand behind the right one then it can never hit you except by sending you flying back (and then you just run and hide behind the pillar again).

Sonic Unleashed's boss is pretty frustrating. Because of the way you have to keep switching between characters it just becomes a pain. Especially the parts where you are Sonic, running around on the Golem-thing and avoiding Dark Gaia's tentacle/vines.

EDIT: Oh and the Patriarch in Killing Floor. He's got a rocket launcher, a minigun, can turn invisible, incredibly powerful melee attacks, and can heal himself if he gets low on health. Sure he's easy if everyone on your team has grenade launchers and LAWs but otherwise he can really hard. Especially on larger maps (like Farm) where he spawns and you don't see him for five minutes until a rocket flies out of no where and he starts firing his minigun at you.

 

[Midnight Crossroads]

Kessler comes up for me. It's not that he was so hard, but he just had this ridiculous amount of health. I can't remember really. Most end bosses today are so easy I can't think of any.

 

[Fatsmanmcgee]

By far, Aries in GoW one.
Good GOD (pun very intended) I replayed that 65 quadrillion times.
Also, possibly the Archdemon in Dragon Age.

 

[Get_A_Grip_]

Pokemon games usually have the final boss as the hardest. Especially because you have to fight through many other fights without healing before fighting him/her.

This.

Pokemon HG/SS has possibally the hardest end boss of all.

 

[JackRyan64]

Shadow Queen in Paper Mario TTYD was a ***** my first time through, as was Gruntilda in Banjo-Tooie. Fucking Hag 1...

 

[Tallim]

Lucifer at the end of Shin Megami Tensei : Nocturne if you are going for the true ending.

 

[Wolfe-KuPo]

Monster Hunter Tri online final boss, good god, Alatreon can be insane...
Thats the best I can think of off the top of my head...

 

[IamSofaKingRaw]

By far, Aries in GoW one.
Good GOD (pun very intended) I replayed that 65 quadrillion times.
Also, possibly the Archdemon in Dragon Age.

The [art after is hard. After fighting Ares about 100 times on the hardset diificulty behinfd God Mode (I forget name) you have to iht a hundred of your clones as well as prottect your family. Oh and you can't qut either or you have to go theough the entire Ares boss battle to get back to the clone fighting part of it.

 

[DeadMix]

Did anyone else here ever play Nano Breaker? The final boss is actually more like 3 bosses, with no healing, and you have to start from the beginning each time. It was a real *****.