Who plays the titular character of the film produced and directed by Edgar Wright that was credited to the American and British film choreographer Litza Bixler?
Litza Bixler: Litza Bixler (born 25 August 1970) is an American and British film choreographer, Artistic Director and Writer. Litza Bixler:  She is best known for her work with Edgar Wright<ref name="Wright/Pegg/Frost Interview"> </ref> on "The World's End", "Scott Pilgrim vs. the World" and "Shaun of the Dead". Scott Pilgrim vs. the World: Scott Pilgrim vs. the World is a 2010 comedy film co-written, produced and directed by Edgar Wright, based on the graphic novel series "Scott Pilgrim" by Bryan Lee O'Malley. Scott Pilgrim vs. the World:  It stars Michael Cera as Scott Pilgrim, a slacker musician who must battle his girlfriend Ramona's seven evil exes.
Michael Cera