Sorceress Rinoa vs. White Mage Kimahri
Checking a FAQ, FF8's best spells usually aren't reflectable - Ultima, Tornado, & Flare all aren't reflectable. So Aura -> Angel Wing wrecks unless you force Rinoa to have all magic (in which case she... still has an argument off Angelo stuff beating out perfect evade! but irrelevant to me.)
Surprised, thought Kimahri would cheese his way to victory, but turns out that reliably winning in 2 turns is good enough. There were a decent number of Rinoa spoilers in the pool, anything with good turn 1 disabling status she can't block really or even just an average speed 2HKO, but.
EDIT: Whoops, Kim wins after all, Aura is dispellable (it's invincible / Holy War effect that isn't dispellable). Rinoa could TECHNICALLY somehow wait for a double, and hope to Limit right away on her 2nd action, but yeahno. Kimpremacy after all as predicted.