While not confirmed, Brainiac is expected to be the main villain in James Gunn's upcoming Superman sequel, Man of Tomorrow. Many actors would be a good fit for the role, and Guardians of the Galaxy Vol. 3 and Peacemaker star Chukwudi Iwuji has now thrown his name into the hat. Iwuji later reunited with Gunn on Guardians of the Galaxy Vol. The role might be a little too similar to what we saw from him in Guardians of the Galaxy Vol.