Re: Which X-Man has received the least development in the films?
Cyclops most definately, He was fine in X1 but X2, he was hardly in it and hardly in it in x3. Colossus for sure, he was cool and I wished he was in more fight scenes and had more interaction with the X-Men, especially at the school. Angel, Beast and Iceman.
If Marvel can get incredibly talented actors/actress to be apart of the MCU, please consider Eva Green, Richard Madden, Lena Headey and Matt Dallas for a role ! Psst and Sean Bean. :)