"Come on, step it up!"
While I admittedly SUCK at Sonic 1 (damn you Spring Yard), I can easily wreak havoc with the blue--technically red, looks more navy blue if you ask me-- blur in Brawl. He can make a quick getaway with the fastest running speed in the game, and his smashes are decent to work with.
With extreme speed, however, it can lead him intro trouble. Say there's an item capsule on the stage and you want to grab it. Unless you're careful not to dash, if try to grab it, instead you attack it. If it's a lie, well... you probably get the point. Learn to control sonic's speed, and you'll succeed.
Also, Super Sonic? EPIC.
Hand drawn, remade in Flash, finished in Fireworks.