American Psycho to Fight Club: Movies featuring characters with alter egos

1/6: The 2000 film American Psycho, starring Christian Bale, tells the story of Patrick Bateman, a wealthy New York investment banker by day and a ruthless serial killer by night. / Image: IMDb

2/6: Fight Club: An insomniac office worker and a devil-may-care soap maker form an underground fight club that evolves into much more. / Image: IMDb

3/6: Shutter Island: Teddy Daniels and Chuck Aule, two US marshals, are sent to an asylum on a remote island to investigate the disappearance of a patient, where Teddy uncovers a shocking truth. / Image: IMDb

4/6: Karthik Calling Karthik: Karthik is always ridiculed by his boss and has faced many setbacks throughout his life. One day, he receives a phone call from a stranger who promises to change his life. / Image: IMDb

5/6: Donnie Darko: After narrowly escaping a bizarre accident, a troubled teenager is plagued by visions of a man in a large rabbit suit who manipulates him to commit a series of crimes. / Image: IMDb

6/6: Identity: Stranded at a desolate Nevada motel during a nasty rain storm, ten strangers become acquainted with each other when they realize that they're being killed off one by one. / Image: IMDb