Mad Men star Jon Hamm has entered into talks to play the villain in Warner Bros' The Incredible Mr Limpet remake.
The Wrap reports that Danny McBride, Sarah Silverman, Kevin Hart, Josh Gad, Keegan-Michael Key and Jordan Peele are also eyeing roles in the fantasy/adventure/comedy.
Zach Galifianakis will take on the title role of Henry Limpet, a man who is granted his wish to be transformed into a fish.
Limpet then fights to protect the underwater population of a small beach town threatened by an unscrupulous businessman, the character Hamm might play.
McBride and Silverman are up for live action roles while Gad, Hart, Key and Peele would take on animated parts.