Gunn even “considered” featuring Brainiac in Superman once upon a time, signaling a very different ordeal for the hero. Superman is admittedly great as is, but a film featuring Brainiac would have gone a long way in setting it apart from past DC projects.

During a recent interview with Entertainment Weekly, James Gunn confirmed the whereabouts of Margot Robbie’s Harley Quinn “will be revealed down the line” in a future DCU project. During the same interview,

The showrunner and DC Studios co-head premiered the second season of 'Peacemaker' alongside star John Cena in NYC.

'Superman' Director Teases Margot Robbie's Return as Harley Quinn originally appeared on Parade. As most critics and fans are quick to point out, the DC Extended Universe had many obvious issues from the very get-go.

Even so, Peacemaker, played by John Cena in “The Suicide Squad” and the eponymous TV show, is still very much part of the new DC film universe, as seen during a brief cameo appearance in “Superman.” James Gunn on the Possibility Margot Robbie’s Harley Quinn May Return in New DC: ‘That Will Be Revealed Down the Line’ Taylor Swift’s New Album Is So Major That Fox News Paused Bashing Jimmy Kimmel to Cover It,

As James Gunn and Peter Safran continue to build the DC Universe, there have been many questions surrounding Margot Robbie’s future in this new era. With the release of Superman, all eyes have turned to the characters in the Batman universe and Harley Quinn.