Klarion the Witchboy vs Twilight Sparkle

Klarion is his Young Justice incarnation, Twilight Sparkle is her usual self. Both are in character, including Klarion being put on a leash by the Light to keep him from going out of control.

Twilight can win if she just dominates the fight, since she can't kill or imprison Klarion. Klarion wins by either binding her or killing her.