Re: Which X-Man has received the least development in the films?
At least with Cyclops, they explored his relationship with Jean Grey a bit. Colossus never had a real story-arc in the movies.
X-MEN RI5E' MUTANT OF THE MONTH | JEAN GREY | PORTRAYED BY FAMKE JANNSEN
"All kind of things." - X1
"This is the only way" - X2
"Kill me before I kill someone else" - X3
"Where else would I be?" - X4