20 Essential Movie Performances That Will Define 2016
15. Margot Robbie - Harley Quinn (Suicide Squad)
Release Date: August 5
The Role: Former psychiatrist and crazy supervillain Harley Quinn, one of the core members of the titular team and, of course, madly in love with The Joker (Jared Leto).
Why It'll Define 2016: Fans have been waiting to see Harley get a screen treatment for years and years, and it's not only finally here, but Margot Robbie is pretty much the perfect casting choice, as further evidenced by her deliciously entertaining showing in the movie's trailers so far.
Her quips and quirky demeanour may well steal the movie from just about everyone else (perhaps even the Clown Prince of Crime himself), and it goes without saying that she's got an insane amount of sex appeal, too. Though much will inevitably be written about whether the portrayal is more female empowerment or male power fantasy, it's going to be immensely memorable either way.