Jason Momoa, star of 'Aquaman', has revealed that Ben Affleck is returning to his role as Batman in the upcoming sequel 'Aquaman and the Lost Kingdom'.

Momoa posted a series of photos and a video on his Instagram this week revealing he was shooting with Affleck at the Warner Brothers studios.

In the post, the 42-year-old wrote, "REUNITED bruce and arthur. love u and miss u Ben WB studio tours just explored the backlot alright. busted on set all great things coming AQUAMAN 2 all my aloha j."

The secret came out when a guided tour bus apparently found out about Affleck's presence on the set. Momoa appears in his video laughing with the onlookers.

Affleck played Batman in the DCEU, having debuted in Zack Snyder's 2016 film 'Batman v Superman: Dawn of Justice'. He made subsequent appearances as the character in 'Suicide Squad' and 'Justice League'.

Despite the 49-year-old announcing his retirement from the role in 2019, it was subsequently announced that he will appear in a shared role with Michael Keaton in the upcoming DC film 'The Flash'.

James Wan returns to direct the 'Aquaman' sequel. David Leslie Johnson-McGoldrick wrote the script with Momoa co-writing the story treatment.

Joining Affleck and Momoa, Amber Heard returns as Mera, Dolph Lundgren as King Nereus, Patrick Wilson returning as Ocean Master,and Temuera Morrison as Aquaman’s father, Tom Curry. 

'Game of Thrones' star Pilou Asbæk joins the cast in an undisclosed role. Yahya Abdul-Mateen II will also reprise his role as the villain Black Manta.

'Aquaman and the Lost Kingdom' releases in cinemas on March 17, 2023.