Henry Cavill
Henry CavillWikimedia Commons/Eva Rinaldi

The first look of Henry Cavill as Superman's alter ego, Clark Kent, was revealed on Monday when the Royal Marines Charitable Trust Fund tweeted a picture of the actor holding up a T-shirt to support one of its causes.

Cavill, an ambassador for the RMCTF, was posing with an autographed shirt for U.K.'s Royal Marine 1664 Challenge, an event to celebrate 350 years of the Royal Marines that aims to raise £500,000 for the charity.

In the photo, Cavill is dressed as the Daily Planet reporter Clark Kent, but he does not seem to be in full disguise as his spectacles are missing.

The ending of "Man of Steel" saw Kent starting his new Daily Planet job in Metropolis, and the new movie is expected to take his story further, despite the Dawn of Justice being cluttered with a lot of superheroes.

Zack Snyder, director of the movie, said in a Los Angeles Times interview in March that Dawn of Justice takes "the 'Man of Steel' and 'Batman' universes and explodes them."

"It's very fun to get into this world with different heroes coexisting in the same universe, but a lot of balls in the air as they say. As a fan, it's an amazing opportunity. You know, Superman and Batman in the movies have never existed in the same frame together. So it's an interesting historical thing," he said.

"We were just testing the suits, right? The new Batsuit and the Superman suit. It wasn't even with the actors, right? It was just to see 'em. I was standing there, they were standing next to each other. And I was like, 'Guys, someone take a picture! This has never happened before,'" the director added.

Although spoilers for the movie have given fans an idea of what to expect when the "Dawn of Justice" releases on May 6, 2016, Snyder is expected to reveal more about the plot and what's in store for the superheroes at the San Diego Comic-Con, which is just over three weeks away.

It was at last year's Comic-Con that Snyder unveiled his plans for a Batman-Superman movie.

"Batman V Superman: Dawn Of Justice" stars Cavill as Superman, Ben Affleck as Batman, Gal Gadot as Wonder Woman, and Jesse Eisenberg as Lex Luthor.

Check out the video of Cavill officially launches the Royal Marines 1664 Challenge.