"I don't think they could afford me now," Millar told MTV News. "I'll stick with Marvel."
Seeing his personal Top Cow and Marvel stories come to life in Hollywood, Millar admittedly prefers to keep his hands busy with creator-owned work. However, that doesn't mean he's any less enthusiastic about Superman.
"I've got Superman's cape hanging up in my hall - I bought Christopher Reeves' cape 5 years ago - that's how much it means to me," he explained. "I would love a chance to do it, but there's something just magical about dong your own stuff."
Millar also said that he likes the idea of assigning the storytelling duties to comic book writers, such as Geoff Johns, who recently landed on "Shazam." "I've seen Superman's head on the screen before but what's in Geoff Johns' head and mine, I've never seen on the screen before."