Cillian Murphy portrays the character of Dr. Jonathan Crane, also known as Scarecrow, in the superhero film Batman Begins. Directed by Christopher Nolan, the movie explores the origins of Batman and his journey to become a symbol of justice in Gotham City. Murphy's portrayal of Scarecrow is chilling and menacing, as he uses fear-inducing toxins to manipulate his victims. His performance adds an element of psychological terror to the film, making it a must-watch for fans of the superhero genre.