If the DCEU had stuck to its originally intended path, Darkseid was basically the Thanos of the Justice League story run, as he was searching for an equation that would allow him to control all sentient beings. References were baked in throughout the series of films contemporary to Justice League, with lines and renderings of Darkseid’s visage that have been pointed out by Zack Snyder through his official Vero account. Ray Porter being drafted into the Justice League mix as the actor who would be his cinematic avatar only further confirms that not only was the two film structure scrapped pretty quickly, but the Snyder Cut just might be out there. For reference, take a look at this photo of Porter, below:
Article source: https://www.cinemablend.com/news/2470347/zack-snyder-reveals-who-was-going-to-play-darkseid-in-the-dceu