Oh, yea... and Ultimecias first, second and third form is NOT set
Do you know what their hp is, nothing I've seen has had conclusive results. (most give just one value though) Now that I think about it though, you are probably right, because some guides say that griever has 120,000 hp and I've killed him with 80,000 before. Still, it doesn't make too much of a difference, Ultimecia still has a maximum level.

Omega Weapon IS possible that way. Therefore he counts. I've still not tried it (I've got so much other stuff to do) but I WILL do it because I KNOW it's possible. Just give me a reason why he shouldn't be possible.
I know he's possible, but when I realized he is always level 100, I realized how impractical beating him is. If you are good Zell can do 40,000-50,000 (lets say 40,000 because of mistakes and lower time limits) in one duel, Wishing Star can do 40,000 and homing laser can do 10,000. That is about the best you can do, which means if you are super lucky it goes like this W=wishing star, D=Duel, H=homing laser, A=acid and I=invincible moon.
A (he has vit 0 on) D W (80,000) (H D I H D W H D W) (does 270,000 each time) repeat 4 times. Ok, getting invincible moon 4 times in a row (I have had 3 times in a row once against him) is super unlikely in the first place, second Wishing star doesn't happen close to as often as I pictured, it would be more likely to require 6 or 7 invincible moons at least. It also is pretty hard to get 40,000 damage on average as well if you don't usually get 12 second duels.

But....I am still trying it anyways .

3) Whatevr. FFVIII is so **** easy anyway so you really don't need to make it easier.
I know, but carding enemies is boring, why not do a fun challenge instead.

2) Even though Ultima Weapon have lower HP than Ultimecia I found him ALOT whorse. And yes... by alot I mean ALOT!!! Why? Well... I fight him at high levels and he's the fastest creature in the game and he can kill your party before you get a turn.
Hmm, yeah but he only has one form which means you don't need to luck out as many times in a row. I think the most annoying part would probably be that you can't save right by him.