What is the hardest boss you ever faced

[RedBlastie]

the hardest one is for me the last boss from Sonic 3 & Knuckles

[TheGuy]

Sephirot -Kingdom Hearts I

[DiamondLeon]

Grunty the final battle from banjo tooie she is also unbeatable
Ganon from the ocarina of time. His battle takes forever and I can never beat him

I've beaten Grunty & Ganon. And yes, THEY ARE NOT EASY.
The worst boss I've ever faced was Sephiroth in KH2 on Proud Mode. The worst boss I ever WILL face will probably be the Mysterious Figure in KH: BBS~

[Nightshade the hedgehog]

i also have a new one ,chairman drek from ratchet and clank 1

all my weapons failed then i got the ryno and i won ^^

[DiamondLeon]

i got the ryno and i won ^^

I'm saving up to try to get the Ryno in Ratchet & Clank: Going Commando~ How good of a weapon is it?

[Nightshade the hedgehog]

I'm saving up to try to get the Ryno in Ratchet & Clank: Going Commando~ How good of a weapon is it?

epic ,100 ammo and it rapid fires ,i got  the last armor then got the ryno

now back on topic

[Super Sonic Boom]

I can feel the rage that will come from this!

Spoiler

Sonic 4 Boss - The one when you run on Mad Gear Zone BOSS

[close]

I mean come on, what the hell...the balloons thrown turn out to be bombs and it can be utter crap with the golden ones.

[Nightshade the hedgehog]

the mad gear boss was always crap

[Super Sonic Boom]

the mad gear boss was always crap

...And don't get me started on the final part of Sonic 4 Episode 1 near the very very end. D:<

[Nightshade the hedgehog]

that was mega MEGA hard

i had to use a walkthrough for crying out loud

[Super Sonic Boom]

that was mega MEGA hard

i had to use a walkthrough for crying out loud

Just when I thought I beat him...he pulls out one last ditch move and kills me with one hit.

SATSR's 2nd to last boss sucked too along with the 2nd to last one found in SATBK.

[~Bubblicious~]

Most of the bosses in most of the LoZ games.
Also, my mum.

[SmashFinale]

King Dedede in Kirby Air Ride
There is not enough time to kill him. Even with Four People helping you! Then you have to try to beat him in under 1 minute
Sephiroth in KH2
Culex in Super Mario RPG
Bowser in Mario and Luigi 3(i mean the Challenge Bowser)
Miracle Matter in Kirby 64 on Boss Endurance
Galactica Knight from Kirby Super Star Ultra

[TrueSilverWolf]

Legate and the legionnaries  at Legate Camp (Even though you have two companions that still isn't enough to kill him and the 6 or 7 legionnaries with Ballistic Fists.) - Fallout New Vegas

EggStation (I had to go through all four of the bosses and reach the end to fight the final boss from sonic two WITH a second battle at the end he destroy the floor if you don't hit him too late.)

Zack second fight with Terra, Mysterious Figure and Vanitas Lingering Spirit from KH BBS (When the battle starts he will do a combo which you need to dodge the second he does it even though you don't expect it once he starts fighting, you must have have Second chance or Once more to survive it and its final blow. Mysterious Figure is almost unpredictable with his moves, he can perform so many types of move that are almost impossible to dodge unless you spam the Square button, also he can remove your command list, scattering around the area and you have to collect them to continue on fighting him. Vanitas Lingering Spirit can kill you in one strike, he can dodge most of your and can restore his hp if you restore your hp using cure except potions.)

Supreme Hunter on Prototype (This is one annoying son of a bitch since most of his attacks does major damage to you, even with upgrade health and weapons. He can charge at you and get rid of 25% to 50% of your HP probably kill you with one hit if you have half of your health.)

[redex32]

King Dedede in Kirby Air Ride
There is not enough time to kill him. Even with Four People helping you! Then you have to try to beat him in under 1 minute
Sephiroth in KH2
Culex in Super Mario RPG
Bowser in Mario and Luigi 3(i mean the Challenge Bowser)
Miracle Matter in Kirby 64 on Boss Endurance
Galactica Knight from Kirby Super Star Ultra

I agree with the challenge  bowser.