In the DC Extended Universe Darkseid was mentioned in Justice League while events in Batman v Superman: Dawn of Justice hint at his existence; there were plans for Darkseid to make an explicit appearance in Justice League, but his scene was cut. In Zack Snyder and Chris Terrio’s original script for Justice League, completed before the release of Batman v Superman, the film was going to explore a distant future where Darkseid had taken over the Earth. After murdering Lois Lane, he brings Superman under control of the Anti-Life Equation which leads to the Knightmare sequence in Batman v Superman. But after the negative critical and financial reception to the theatrical cut of Batman v Superman, Warner Bros. executives became nervous and asked them to rewrite parts of this script, which led them to remove these plot points to save for a later film. This effectively cut Darkseid’s role down to a cameo while his lieutenant Steppenwolf took over the role of central villain. With Snyder’s departure and Joss Whedon’s extensive reshoots, any reference to the Knightmare sequence and distant future, as well as Darkseid’s cameo, were discarded for a more streamlined, self-contained approach. Actor Ray Porter was even cast as Darkseid.

This is my version to represent him in the movie.