He's a sassy, bearded Han who shoots better and beats the shit out of people. Like Geralt and the Nameless Man from the Clint Eastwood Movies. He fought Boba Fett AND HIS SHIP with a jetpack and a laser pistol- and won. He killed IG-88, opened up some cages to let wampas out, just so he could shoot them, more or less singlehandedly pushed through an entire line of AT-Walkers during the Battle of Hoth, and fought with an evil Jedi dude who was going to backstab the emperor with his caltrops-shaped death star in order to be the top honcho.
Granted, his story and purpose is remarkably similar to Han's, but the difference is that Dash doesn't give a fuck. Dash shoots first, Dash beats the fuck out of biker gangs and elbows them so hard that they spin out and blow up. Does he fall in love with a Princess and learn to care for people that aren't himself and his trusty robot sidekick? Fuck no. He's busy robbing entire garbage trains and murdering other bounty hunters. Most importantly, Dash actually uses his own ship to blow up the Death Star Equivalent that he was dealing with, rather than letting Lando do it, because fuck Lando, it's Han's ship.