Rei Sakigake vs Stella Star
This is a tribute to Starcrash. While Stella did take down her share of opponents, she wasn’t quite powerful enough to evade the enemies for very long. Ultimately she won’t be able to stop a fighter as powerful as Rei either. Rei has several cards at her disposal to boost her attack power and speed. At that point, no human can stop her. Rei Sakigake wins.
How about Thor vs Achilles?
Sure, I’ll put this one in, been a while since Achilles fought