Creating an alter ego like Kobe Bryant’s ‘Black Mamba’ could boost your work performance. The man who helped the basketball legend shows how
Fortune · Christian Petersen/Getty Images

Ever suspected your boss or a coworker is someone entirely different outside of their nine-to-five?

If they are indeed masquerading as somebody else when they’re around their colleagues, they might actually be onto something.

Many workplace coaches say creating an alter ego just for work could better position you for career success—and elite players across industries are said to be paying thousands of dollars for lessons in how to take on a new persona.

In a series of social media posts earlier this year, Matt Schnuck—a San Francisco-based entrepreneur and executive coach—outlined how the performance enhancing technique, a favorite of the rich and famous, was taught by “the most expensive executive coaches” as a method for overcoming imposter syndrome.

“Even the best in the world get insecure. They’ve just found ways to work with it skillfully,” Schnuck—who promises to share the secrets of the world’s best coaches with his 40,000 followers—said. “One technique Beyoncé uses: Character Invention.”

Beyoncé famously crafted Sasha Fierce, her on-stage persona, to help her perform with confidence. The megastar named her 2008 album I Am … Sasha Fierce after her alter ego, whom she once described in an interview with Oprah Winfrey as a “thing that takes over” in front of an audience.

“It's kind of like doing a movie,” she said at the time. “When I hear the chords, when I put on my stilettos… the moment right before [going onstage] when you're nervous—then Sasha Fierce appears, and my posture and the way I speak and everything is different.”

Beyoncé retired Sasha Fierce in 2010, but she’s far from the only A-lister to have drawn on an alter ego at some point throughout their career.

Other famous alter egos include David Bowie’s Ziggy Stardust, Nicki Minaj’s Roman Zolanski, and all-star athlete Bo Jackson’s Jason—who was based on the serial killer villain in the Friday the 13th movie franchise.

Music icon Paul McCartney spoke in 2008 about finding creative liberation by working under the alias “The Fireman” as part of a musical collaboration with artist Youth.

“The pseudonym allows you to be anyone you want to be,” he said in an interview with NPR. “We always say, The Fireman can do anything. I think you can get into a bit of a straitjacket—you know, I am 'Paul of The Beatles' or I am 'Paul McCartney' who makes albums a certain way. So, it's very liberating.”

Here's how you can create your own Fireman and Sasha Fierce, according to several top coaches—including the one who helped Kobe Bryant craft Black Mamba.