Frank Miller told MTV that Mickey Rourke may return as Marv in Sin City 2, which starts shooting this June with co-director Robert Rodriguez.
Although his character died in the first film, Sin City 2 could present both prequel and sequel content. That means Dwitght (Clive Owen), Shellie (Brittany Murphy), Nancy (Jessica Alba), Manute (Michael Clarke Duncan), Gail (Rosario Dawson) and the rest of the Old Town gang could come back as well.
"It jumps around a bit," Miller said, "but mostly it's one story, incorporating some short stories that weave in and out of that."
You can read the whole interview here.