Originally Posted by
Sorinth
Isn't Zorro pretty much the inspiration they used for Swashbuckler?
Certainly a multiclass Fighter/Rogue should be able to create the character, but you could also go Barbarian since and fluff rage as actually just an intense focus similar to how athletes at times are just "in the zone".
Kensei Monk is also supposed to be that skilled swordsman.
But what is actually your problem with a straight Dex Fighter using a Rapier? It's not going to be the most optimized damage dealer, but you should be able to hold your own in games where min/maxing isn't the most important thing.