Epix has released the official trailer for “Batman” prequel series “Pennyworth,” which stars Jack Bannon as Bruce Wayne’s legendary butler, Alfred Pennyworth.

The 10-episode, hour-long drama series is based on DC characters created by Bob Kane with Bill Finger. The series, from Warner Horizon Scripted Television, follows a much younger Alfred Pennyworth, a former British SAS soldier in his 20s who forms a security company and goes to work with a young billionaire Thomas Wayne (Ben Aldridge), who’s not yet Bruce’s father, in 1960s London.

“I’ll do my best to keep you alive,” Pennyworth tells Wayne in the trailer. In order to keep his word, he reveals some pretty serious action moves. You can watch the trailer above.

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Per the official character description, “Alfred Pennyworth is a boyishly handsome, cheerful, charming, clever young man from London. Honest, open-faced and witty; you’d never take him for an SAS killer. Alfred doesn’t know how to reconcile the kind-hearted boy he used to be with the cold, calculated killer he was forced to become. He’s a man on the make, who doesn’t know what to make of himself yet.”

This is a version of Pennyworth we didn’t expect from the kind, elderly Michael Caine — but Bannon manages to nail the accent and sound just like him.

“I don’t like violence, and I don’t like you, mate,” Pennyworth is heard saying later on in the trailer, before shooting three men in cold blood as Thomas Wayne cowers in the back seat of the car.

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The end of the trailer gives a little wink and a nod to Pennyworth’s future.

“You could find a position in a good household,” a man who looks to be Pennyworth’s father tells him. “Do right, you’re a butler before you’re 40.”

“Pennyworth” premieres July 28 at 9 p.m. ET on Epix.