Introducing Carlos Estevez, also known as Charlie Sheen, in 'Machete Kills'

Whatever names you might have used in the past to refer to Charlie Sheen, we bet you’d never used this one: Carlos Estevez.

That’s his birth name.

And now, it might be his professional acting name, too.

In his upcoming movie, “Machete Kills,” Charlie is identified as Carlos Estevez in the credits.

The Los Angeles Times reports that a trailer for the action flick, shown over the Memorial Day weekend, shows Charlie with a gun with the words, “And introducing Carlos Estevez.”

In the movie, debuting Sept. 13, Charlie plays the U.S. president who assigns assassin Machete Cortez (Danny Trejo) to stop a Mexican arms dealer from launching a weapon into space.

The Times was left to speculate about the name change after it couldn’t get in touch with Charlie’s camp.

One theory: It was director Robert Rodriguez’s idea.

Another: Change the name, lose the bad-boy image.

Charlie’s brother, Emilio Estevez, uses his birth name professionally. But Charlie followed dad Martin Sheen’s example in dumping the surname, a decision Martin - born Ramon Antonio Gerardo Estevez - regrets.

(Charlie actually stopped being called Carlos at age 4 to avoid being confused with his Uncle Carlos.)

“I thought, I got enough problems trying to get an acting job, so I invented Martin Sheen,” the elder Sheen said in 2003 on “Inside the Actors Studio.”

“It’s still Estevez officially. I never changed it officially. I never will. It's on my driver’s license and passport and everything ...

“In fact, one of my great regrets is that I didn’t keep my name as it was given to me. I knew it bothered my dad.”

Taking bets now on whether Charlie’s “new” name sticks.

In a Univision interview last year, he said: “I don’t wake up feeling Latino. I’m a white guy in America. I was born in New York and grew up in Malibu.”