O Brother, Where Art Thou star Tim Blake Nelson is in talks to join the Fantastic Four cast as scientist Harvey Elder.

If he signs on, the actor will join Miles Teller, Michael B. Jordan, Jamie Bell and Kate Mara in the blockbuster.

Elder becomes the Mole Man in the Fantastic Four comics, but the character is not expected to appear in the new film, according to The Hollywood Reporter.

Nelson is not new to comic book movies - he appeared in 2008’s The Incredible Hulk.