Queen of Atlantis, Mera will reportedly appear in Zack Snyder's "Justice League".
The film which already features Wonder Woman will possibly be the possible cinematic debut of Mera, reported Aceshowbiz.
Shooting for "Justice League Part One" is slated to begin next year in London after "Wonder Woman" wraps production.
"We're making most of 'Wonder Woman' [in the U.K.] and we're also making most of 'Justice League' there, 'JL One'... We're definitely gonna be shooting 'Part One' in the first or second quarter of next year," said producer Charles Roven.
Ben Affleck, Jason Momoa and Gal Gadot are expected to reprise their roles as Batman, Aquaman and Wonder Woman in the film.
Chris Terrio and David S Goyer have penned the script.
The film is slated for November, 2017 release.
