Los Angeles: Actress Tilda Swinton says that she is a big Marvel fan and is excited to be joining the universe in 'Doctor Strange'.

The Oscar-winning actress is set to play The Ancient One in the film and is the latest high profile star to join the Marvel franchise. And Swinton admits that the premise of the film, the character, and the world in which it is set was a major draw for her, reports femalefirst.co.uk