Nash! Because He served In the army and he also has the ability to generate projectiles and Also he trained Guile and Nash was also a powerful Military Officer before Guile so Is it Nash?
For me, it’s a tie between Karin or Nash. Karin, since her martial arts is ancient, no one really knows about it, and she’s skilled to take down anyone. Or Nash for being a superior officer of Guile in the USAF, being a veteran, and him being more skilled with Sonic Boom. So, I’ll say Nash as well. He’s a veteran fighter.
Cody
Ed
Karin
Nash 
Abel 
Vega
