Astaroth (FF II) runs the gauntlet

The fights are held inside the Jedi Temple, one after the other.

1. Gottos (FF II)
2. Ena (Path of Radiance)
3. Tifa and Aeris (Advent Children)
4. Tiamat (FF I)
5. Ganondorf and Canderous
6. Naesala and the Witch-King
7. Janaff, Ulki and Tibarn (all three from Path of Radiance)
8. She wins all fights.

For those who wouldn't know who is Astaroth, it is the second-hardest foe in FF II, just after the Emperor. She guards the Ribbon.

I believe she will be killed against Tibarn, Janaff and Ulki. Her armor is as heavy as the Black Knight (Path of Radiance again) and it is cursed.

It's like if Astaroth was ill-known or not a sizeable villain.