Banshee (X-Men Movies)

Sean Cassidy, also known as Banshee is a character from 2011 film "X-Men: First Class".

He is a mutant with the ability to create powerful sonic waves with his voice. In 1962 he was recruited by Charles Xavier and Erik Lensherr in order for him to join their team of mutant peacekeepers they were forming for the CIA.

After the Hellfire Club tried to recuit them, Sean and the others relocated to Xavier's mansion where they began training to defeat Shaw. Xavier taught him how to control his ability and use it to fly by using a harness developed by Hank McCoy.

During the Cuban Missile Crisis, when the team assembled to finally confront the Hellfire Club, faced Angel alongside Havok.

Some time later but prior to 1973 he was killed, likely as part of Bolivar Trask's experiments on mutants.

Years late, Sean's name appeared on a list of names Mystique scrolled through on William Stryker's computer while searching for Magneto's file.

He is portrayed by Caleb Landry Jones.