I would be Ekko. Yes, the new guy. For several reasons.
1.) He has grit. Yeah, he was an orphan raised in the slums, but know what? The thing about that is you lived it all your life. After a while, living it doesn't truly bother you. What bothers you is trying to reach somewhere else and failing.
2.) He's resilient and determined. He gets knocked down once. He gets right back up. Taken down again, he'll keep trying no matter what. Finally defeated the bad guy, but the mural got destroyed. "Fuck..." Does the fight over again.
3.) He has jokes for days. Thing about being smart, you are sarcastic, witty, and can be an ass purely by knowing how people work and weak spots.
4.) Because he doesn't need years, months or days. He just needs a second.