#3 Damien Sandow
As part of The Teacher's Pets, Aaron Haddad was known as Idol Stevens and didn't quite make much of a mark on the professional wrestling industry.
Later, he would be repackaged—although not entirely from the ground up—and would re-debut under the name Damien Sandow.
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While technically not a teacher in the most literal sense of the word, Sandow's character was very much inspired by the trope as he was essentially a man who knew he was smarter than everybody else and had no trouble passing that information along.
Sandow's vignettes would consist of him teaching a lesson in culture, etiquette and other high society intelligentsia topics while looking down his nose on everybody else.
This allowed him to adopt several nicknames such as The Enlightened One, The Beacon of Light in a Harbor of Inequity, The Lord of Literacy, and his most famously used moniker of The Intellectual Savior of the Masses.
To further drive home the point, when he and Cody Rhodes formed a tag team, they became known as The Rhodes Scholars.
Like anybody on their high horse, it's fun to see them be taken down a peg, which is what happened to Sandow eventually—too soon if you ask myself and many others, who wished to have seen him be successful in his failed Money in the Bank contract cash-in attempt.
Sandow would drop the change his gimmick to that of a parody artist and a stunt-double to The Miz named Damien Mizdow, which would carry him into the end of his tenure in WWE.