10 Actors That Totally Underprepared For A Movie Role

When the star found out that he was being entrusted with bringing to life the earlier years of the leader of the X-Men himself, it's not hard to see why James McAvoy quickly assumed he needed to perform one rather specific action in the lead-up.

So, before he first set foot onto the set of X-Men: First Class all those years ago, the Scottish sensation decided about a month in advance of filming that he was going to bite the bald bullet and shave off his precious hair.

Only, when he revealed his shiny preparation to the team behind the X-Men prequel, he soon discovered that being bald was most definitely not part of the plan for Charles Xavier at this point in his story.

Far from it, in fact. They actually wanted McAvoy to have long hair in that 2014 outing, so the star was ultimately forced to sit in a make-up chair for a grand total of 15-hours in order to equip him with hair extensions for his Professor X debut.

Simply put, when it comes to the job of nailing your hairstyle for a part, McAvoy unfortunately couldn't have prepared any worse for the role of a long-haired mutant legend.