I'd be Pokiehl the Destroyer. I'd be a pld/whm/mnk/war/thf/blm/smn/drg/rdm/rng/nin HNM. I'd have about 100k HP, with eva and def out the wazoo, incredibly fast attacks, including double and triple attacks, stong attacks, with 200hp a tick regen, and TP regen, with huge AoE range on powerful ws's attacks.
I'd also be a bunny. Bunny o' Doom.
I'd use the 2hours of each of my respective jobs at certain intervals, some back to back. They would also reset after 2hours of use.
I'd start off with summoning some avatar or another and just Astral flow, but I can do it 3 times. Once a minute just like summoner pc's. Then I'd call Wyvern, only it'd be a real wyvern, like Bune or something.
I'd use a reset hate ability, then proceed with Hundred Fists. Take that all you mages! Just for good measure I'd use Perfect Dodge, although I doubt anybody would melee me, but the thf job can't just be for the triple attack can it? Probably do Mighty strikes somewhere in there as well.
At about 50% health, if you even got to that, I'd use Chainspell with some of that fancy Tier Two AM, Flare II ftw! Oh yeah, among my many little quirks, I also have Resist Stun 100%.
If there were any survivors I'd take them out with EES. At about 10% health, I'd do Invincible, only it'd be a perfect version, negating magic as well as physical. At 5% I'd do Benediction! And god help you if it's been 2hours since any of my other two-hour abilities, cuz they is back!
If by some chance you do kill me, I'd go out with a bang. Literally, I'd do that ninja 2hour, however it's spelled. Huge huge AoE, and about 2,000dmg, so only galka monks would survive, if they were that lucky.
And the drop for killing me would be.....a rarab tail. That's it, you spent the entire day trying to kill me and that's all you get. One for everybody.
The title for killing me would be "Bunny's B*tch"