Several Marvel Cinematic Universe actors will be joining the DC Universe, confirms DC Studios boss James Gunn. As of this year, Gunn has completed his journey with Marvel Studios with the release of Guardians of the Galaxy Vol. 3, which marks the end of his trilogy. With his MCU adventures over, Gunn will now be fully focused on building the new DC Universe together with Peter Safran. One of the big projects that Gunn will be spearheading is Superman: Legacy, which he wrote and is set to direct.
https://screenrant.com/marvel-actors-dc-universe-james-gunn-confirmed/