Ultimate DC Cinematic Universe

This is what the DCU would be like if the movies were less divisive & contain actors from Arrowverse.

Justice League

 * J'onn J'onzz/Calvin Swanwick/Martian Manhunter (David Harewood): A inhabitant of Mars during the era of the Green Martians. After a planet-wide act of genocide enacted by Ma'alefa'ak, he lost his wife, children & was left as the only survivor of his people. In the centuries that followed, he traveled to Earth where he would set up a number of identities using his shape shifting powers. Hence, he formed an alliance with Superman in order to defeat the extreme threat posed by General Zod. At some point during the two years after the Kryptonian invasion, he became promoted to United States Secretary of Defense & he attempted to aid Superman again, this time against Doomsday, though his efforts were ultimately unsuccessful. Him having desire to both honor Superman's legacy & protect the Earth from threats beyond the Earth, he assisted Batman in the formation of the Justice League.
 * Billy Baston/Captain Marvel/Shazam (Zach Callison/John Cena): A orphaned boy who was chosen by a wizard to be a champion of good. The wizard gifted him with the power of six legendary Greek figures & became an adult superhero empowered by six legendary Greek figures.
 * Kendra Saunders/Hawkgirl (Ciara Renée): A young woman who was encouraged by her grandfather's first cousin, Shiera to embrace her destiny & join the Justice League.

Allies

 * Lois Lane (Amy Adams): A career-driven intrepid reporter who speaks her mind & goes for the big scoop regardless of the dangers.