Which Final Fantasy main antagonist was your favorite from the series?

[FinalFantasyBro]

Last time we had talked about the main protagonist of the main line FF games now let talk about their villains. Which bad guy or bad girl did you men and women to be the most intimidating?
FF 1: Jack Garland
FF 2: The Emperor
FF 3: Xande or The Cloud Of Darkness (You either choose Xande or Cloud Of Darkness!)
FF 4: Zemus
FF 5: Exdeath
FF 6: Kefka Palazzo
FF 7: Sephiroth
FF 8: Ultimecia
FF 9: Kuja
FF 10: Sin
FF 10-2: Shuyin (Yes! Sequel games could be allowed.)
FF 11: Shadow Lord, Kam'lanaut, Eald'narche, Promathia, Razfahd, Lady Lilith, Hades, or Cloud Of Darkness again. You can only choose one of the bosses from the MMO.)
FF 12: Vayne Solidor
FF 13: Barthandelus/Galenth Dysley
FF 13-2: Caius Ballad
FF 13- Lightning Returns: Bhunivelze
FF 14: Ascians, Garlean Empire, Primals, Teledji Adeledji, Lolorito, Llberd Feare, Nidhogg, Thordan 7, Warriors Of Darkness, Yoysuyu goe Brutus, Fordola rem Lupis, Omega, Vauthry, Ran'jit, Meteion, (Again you can only pick one from the MMO.)
FF 15: Ardyn Izunia

Again I didn't included 16 because of course it haven't came out yet.

[Jacobbbb]

Definitely Sephiroth he's so iconic and so cool also. He's just the one that's always stood out from the rest to me 🙏

[clampfan101]

I’ve seen people recognize “One-Winged Angel” within the first few notes. ;) (SSBU trailer reactions. lol) Sephiroth is my second favorite villain of all time.