Hit Man‘s ending takes some creative liberties concerning the true story of Gary Johnson, providing the audience with several twists and turns. In Hit Man‘s cast of characters, Glen Powell brings Gary to life. Gary begins the film as a mild-mannered college professor who often helps the New Orleans Police Department by providing tech for undercover sting operations. That said, the true story of Hit Man sees Gary pushed into playing the undercover, fake hitman himself, with the professor soon finding he has a hidden talent for eliciting confessions out of unsuspecting conspirators.