Awesome Ego: Left WWE when they told him to throw a loss to Brock Lesnar on free TV. Lolno. Austin said afterwards that it wasn't losing to Lesnar that he objected to, it was that said loss was to occur on Raw and not on a PPV with the proper buildup, feeling that losing on Raw would not do either man's careers any favors.
Though he never used it, this theme by H-Blockx, from the album WWE The Music Vol. 4 describes him perfectly.
Designated Hero: Towards the end of his career Austin had a tendency to apply the stunner to pretty much everyone he interacted with, including other babyfaces, often with no provocation whatsoever. This got particularly bad when Mick Foley and Ric Flair ended up turning heel when they had the audacity to get upset about this. Additionally, his intimidation of defenseless non-wrestlers like Jonathan Coachman and Michael Cole often crossed into outright bullying.
Fountain of Memes: "Austin 3:16" has had so many homages/parodies that it may be impossible to keep count of them all by this point.
Growing the Beard: His early matches sucked by his own admission, but overtime Austin would become well respected for his unique brawler-technical style.
Magnificent Bastard: Even at his most popular, Austin was still a shady son of a bitch. It was on his vest, for crying out loud!
Memetic Badass: Austin already got Chuck Norris-levels of this before, being considered one of the most badass wrestlers ever, but ever since Donald Trump got elected as President of the United States, Austin's delivery of the Stunner to Trump in WrestleMania 23 has resurfaced as a meme, given that this now means that Austin has given the Stunner to a President.
Austin's "WHAT?" noted in various other places, has taken on a life of its own. Years after his retirement, long promos are still interrupted by "WHAT?" at breaks, much like Ric Flair's "WOOOOO" whenever someone does a knife-edge chop in the corner.
Misaimed Fandom: "WHAT?" was originally created by Austin as a heel when he was acting strangely, saying "what?" during promos in order to repeat what he had just said. He created it in real life when leaving an answerphone message for Christian. Later he used it to intimidate opponents if they even looked like they were about to interrupt him. It got over with the fans so much, they also chanted "WHAT?" when any wrestler tried to cut a promo. It also basically ended Austin's chance to get over as a heel.
Several wrestlers have actually caught on to the chant, and some have found ways of switching up their speech patterns and rhythms mid-promo to kill the momentum of the chant. Others, most notably Kurt Angle, would intentionally draw out the chants, even insulting the audience for using it.
During the event, Vince McMahon foreshadowed Austin's heel turn:
Vince McMahon: You want shocking? Tonight, you'll get... shocking. I guarantee it.
Tear Jerker: For some, Austin's "beer bash" at WrestleMania 25 could be seen as one, since Austin and many others considered it his final farewell to the ring.
The "Thank You Austin" Chant at the 2009 WWE Hall of Fame and during the mentioned "beer bash".
The last scene of the "RAW is Owen" tribute episode of RAW; instead of giving a speech or a traditional tribute to Owen, Austin cracked open two beers in the middle of the ring, chugged one, and left the other behind in the ring.
Villain Decay: Happened in record time during his stint as Vince McMahon's Dragon. Austin went from a vicious, sadistic man who would constantly Kick the Dog to constantly sucking up to Vince by giving him gifts and hugging him to the point where even Vince wanted Austin to go back to being his old self. During his heel run in the Alliance, Austin would be somewhere in between these personas, and of course his inadvertent creation of the "What?" chant didn't help things.