Nah just joking. If I had to choose. I would be a villain that you fight so hard to get to to defeat, only to find out our goals were similar and our enemy was one in the same i.e Magnus in Chrono Trigger.

Then later on in the game since I realize the protagonist and his companions want the same thing, grudgingly join them ONLY because I need a few more meat shields :D

endtherapture:
I would be Marauder Shields. Never forget.

Never Forgive

I would be a child boss. So that no one could ever harm me.

I would be

INVICIBLE

I'd be a boss for an action game. Extremely quick and using daggers, throwing knives and smoke / flash bombs.

My strength would lie in my speed and maneuverability so that I could get close to the player and unleash a flurry of attacks while dodging any counter attacks. If an opponent tried to keep me at range I would unleash volleys of poisoned daggers to stun / cripple them as I close the distance.

At about half health I would then throw a handful of smokebombs covering the arena in a shroud of dense, grey smoke. Causing visibility issues for the player. It is then that my strategy would change and I would use my stealth to launch opportune attacks and flashbombs to temporarily blind my opponent so I could retreat back into the smoke. Sometimes launching volleys of daggers from the fringes of player vision just to disappear again as they attempt to dodge the attack.

At 15-20% life the smoke shroud would lift and I would get an adrenaline rush, increasing my speed immensely. I would follow the same attacks as my first stage but slightly more reckless and erratic.

As the swing that would finish me is launched I'd parry with a dagger and launch a final flashbomb to cover my retreat. On the ground after the battle the character would find the same daggers I was using, which upon equipping would bestow them with the same speed I had fought with.

My weaknesses would be my vulnerability to physical effects, such as slowing my speed down. It would severely hamper my combat style though I would become more resistant to it if repeated uses were attempted. Also I would be wearing a lighter more flexible armour, meaning strikes that connected would connect with near the full force that was intended. The final nail in my inevitable coffin would be my mediocre health pool. Not terrible, but not too great either.

I'd be the second to last boss that evens the playing field. You use all your lasers and missiles to try and take me down, and I just whittle down all your ammo and armor until it's just you and me in the fire and mud trying to kill each other with bare hands and chunks of debris.
My weakness? Why should I bother to tell you (that it's my knees)?

You discovered my weakness! I've got to say you're probably the only one able to take down the final boss. Here's my key, now GIVE 'EM HELL!

I would be the boss in an RPG that takes advantage of the fighting system and forces you to change your strategy in every turn, like those bosses that are weak to an element but absorbs all the others; or cast weird debuffs that make healing magic hurtful or characters go berserk...

I think I'd like to be the childhood-friend-slash-rival-turned-temporary-enemy boss from a JRPG. So I'd be guaranteed not to die post-boss fight. Instead, I'd join up with the main character's party after giving main character an affectionate speech on how much he/she has improved.

My quirks? As a female JRPG character, I'd pretty much be forced into a skimpy outfit to show off massive amounts of cleavage. My fighting style would probably be more magic-reliant than physical-attack reliant, though with some of both, since I almost always play the "Magic Knight" archetype in a video game. Judging by the aforementioned friendly rivalry dynamic, if the main character was male, I'd probably also be his unlucky childhood friend. ...Yeah, I know my JRPG stereotypes.

I'd be the Mid-Boss through, and through.

I'd be a boss that keeps screwing with reality constantly, no two fights are ever the same, you think your about to win then I end up turning the sun off and now your going to have to fight me in the dark, then the sun comes back and your fighting upside down while I'm a kickboxing radio shooting biscuits that have randomly generated effects if you touch them.

basically I'll be this guy:

:D

I would be a boss with a set weakness, easily discoverable attack patterns, high defense, and moderate health. The difference is that each of my attacks requires a half-hour long cutscene that cannot be skipped, and after I drop below 10% health they increase to one hour, and below 2% I have just one, three-hour long attack that destroys myself and anyone in the player's party that has below 20% health.

Daymo:
I would be an RTS boss that gets to control all the factions of the game, think the Chinese chick from Generals: Zero Hour. Mucking around with units and creating op combinations in games that let you use mind control is so fun.

She was difficult as hell to take down on hard, freakin paladin tanks were in my base within minutes. Good times, good times indeed.

I would be the Big Bad of an entire game series who has been chessmastering all of the events of the plot and as such, you would never get an actual chance to fight me directly. In the rare occasion the hero gets close to me I would be visible on the battlefield but protected behind some sort of indestructible partition/shield and would summon giant robots/endless waves of mooks until the hero discovers the obscure puzzle based weakness to bring down the shield and start the next cutscene, at which point a Mass Effect style choice would ensue in whihc I xanatos gambit the player into stopping a bomb/saving a previously captured ally or some other contrived event which would allow me to escape and continue my villainous schemes.

Yes, I'm that evil.

I'd be the optional boss from Borderlands Knoxx armory DLC, you know the one with incredibly cheap attacks and minions who can kill you with one hit.

fuck you all!

I would be a recap of all the bosses previously fought. I would have all their abilities and the players will use their knowledge of beating the other bosses to defeat me.

*caughzantcaugh*

But done way better...

As for appearance it would be the 'dark' version of the protagonist like Dark Link, Dark Samus and Dark Pit.

Depending on the game, I would be like super human/ humanoid/ cyborg (maybe a supervillain theme boss) who use speed and strike the player when he/ she is down. When the player is knocked down, blam! His body is flying about due to me sending his/ her mangle corpse flying from my awesome blade/ sword strike attack!

Perhabs i would be the 2nd or thrid boss, somekind of very big angry guy, with comic relief effect within the gameplay.

The way i would be defeated would be by battlefield hazards, such has exploding barrels that leave me vulnerable, or falling anvils.

I would look innocent and semi-angelic, but have fearsome demonic powers that make me very difficult to defeat. Probably a final boss. Attacks at a range have no effect. Degrades in appearance to become more terrifying as weakened.

My attacks:
-AoE light magic attack
-Grab the player and drain their Health, Mana, EXP, etc.
-Various sword attacks with a rapier, mostly stabbing, that cause severe poisoning
-Banshee-like scream that causes damage the closer the player is to me and causes them to move slowly
-Teleportation
-Summoning shadow creatures to attack the player (after 50% damage)
-Minor Healing

The only reasonable way to defeat me is to travel to the far reaches of the Earth and gather various mcguffi-I mean "god-slaying weapons" that serve to weaken me. Somewhat. You of course have to navigate complex dungeons and temples in order to find them. Because that's where I put my god-slaying weapons.

I'd be one of the bosses who does massive damage, so you have to actively avoid being near him. I'm almost completely unstoppable except I didn't get to choose our final battleground, so there is some random element of it that you have to use to your advantage. Seeing as I'm so overpowered, I don't even notice the exploit since I see you as wholly inferior. Also when I go down, I have a drawn out speech proving that I actually had good intentions and killing me made things worse. Then I drop a detonator and you have to run away before the timed charges go off.

An extremely unfair SNK boss that will one-shot you, take all your quarters and ruin your childhood.

i would be the human reaper on insanity... that shit was difficult... take it down to hard, and that thing feels like butter

Anyone here remember the 1st boss in Majora's Mask? Yeah, make it something like that, where it gives kids nightmares. Constantly spewing nonsense out of my mouth that echoes, erratic movements, annoying environmental hazards. My own ideas being that I would be some barely sentient reality warping thing that causes the arena to sporadically change, and that I'd sometimes stop mid-combat and ignore you for absolutely no reason.

The necesssary joke boss. Like Bob the Killer Goldfish, but as a moonwalking narwhal that spouted Mahatma Gandhi quotes. Because.

I'd say, it depends on the type of game...
For a top-down game, I'd be a pretty tough, high damage BeerTent with either a really big sword, or something similar to Dedede's Rocket-Hammer. I might not be the fastest, and I'd occasionally heal myself by taking a drink (Also would be my weak-point.) Firearms wouldn't work so well either, as I'd have a shield I'd quickly put up to protect myself from danger. Occasionally, I'd pop in a status effect, but this would only get prominent if I ran low of health, and can't find a safe spot for a breather in the arena.

For an FPS... Hrmmmm... I'll take from Brink on this one, as i'd be a lot faster, and with firearms instead of the sword. I'd be quick to slide into cover, and probably end up taking a few shots to whittle down the player as I quickly speed in-between cover. I'd require either quick reflexes or traps to put me down, either that or a melee character to take me by surprise Either that or make it a race. If you get to the booze before me, You'd win, as... Well... I'd just be a Tent without the alcohol.

Good question. I'd probably one of these ironic bosses we don't see too much of, nowadays. Anyone remember Bob the Killer Goldfish, from Earthworm Jim 1 and 2?

BOSS FIGHT!

/me is stomped on once, player character moves on, completely unimpeded.

Achievement Unlocked: A Boss? What Boss?

I'd be the bastard hard boss you you're supposed to lose against (but it's possible to win) early in the game to demoralize you, but my kind start reappearing later as elite enemies and are much easier to kill because you're stronger than before.

That or the random ambush boss that destroys you if you don't think quickly enough to dodge my first attacks.

I would be a battle mage grandmaster in a game like asuras wrath, my attacks would be in the pattern of the and melody of the tetris theme, as the battle goes on my attacks become more over top and aggressive as the music starts playing faster and faster.

I would be one of those bosses whom, when defeated, just change into their human/non-boss form. While defeated I would somehow be even more smug than if id won. My only flaw is that I have an ultimate fight at the end wherein I actually do die for some inexplicable reason which will not be explained whatsoever.
Also my weapons would be Canadian nun-chucks. Not nun-chucks made by Canadians but Id be extremely tall and strong and I would simply wield two Canadians help together by a chain. They would stand rigid because I asked them nicely and apologise whenever I hit the heroes.

I'd be the boss everyone rage quits on.

-raining lava
-walls of bullets
-tornadoes of rock penises
-instant kill lazer eyes
-1 billion hp
-4 minute berserk timer
-Able to teleport behind you
-Acid pee
-Meteor boogers