Superman star Edi Gathegi unveiled the bodily and psychological course of he underwent to turn into Michael Holt/Mister Terrific. The actor would be the first to play the hero in a live-action theatrical venture, marking an enormous milestone for the character. Mister Terrific beforehand appeared in a number of animated and tv tasks, together with the Arrowverse, during which Echo Kellum portrayed him. Along with Gathegi, Superman stars David Corenswet, Nicholas Hoult, Rachel Brosnahan, Nathan Fillion, Isabela Merced, Sara Sampaio, Wendell Pierce, Skylar Gisondo, and Frank Grillo, amongst others.