Evans is known to comic book fans for his role as Johnny Storm/The Human Torch in Fantastic Four, while Matthew Fox is recognizable for his role on ABC's Lost, and his role as Racer X in the upcoming Speed Racer adaptation.
Tatum, on the other hand has experience playing military roles, as he will be playing a U.S. soldier in the upcoming Stop Loss.
At the present, the confirmed cast list for G.I. Joe includes Ray Parks (Snake Eyes), Rachel Nichols (Scarlett), Adewale Akinnuoye-Agbaje (Heavy Duty), Said Taghmaoui (Breaker), Marlon Wayans (Ripcord), Sienna Miller (the Baroness) and Byung-hun Lee (Storm Shadow), and Joseph Gordon-Levitt (Duke's best friend, and possibly Cobra Commander). G.I. Joe is on schedule for a 2009 release.
G.I. Joe: The Rise of Cobra was released August 7th, 2009 and stars Adewale Akinnuoye-Agbaje, Christopher Eccleston, Joseph Gordon-Levitt, Byung-hun Lee, Sienna Miller, Rachel Nichols, Ray Park, Jonathan Pryce. The film is directed by Stephen Sommers.