With a new year on the horizon and the holidays upon us, it’s a good time to take a look back at 2014 to remember and remark upon a few of its key DC Entertainment moments. Some of these moments played out on the comic book page or the screen, others were real-life happenings that shaped what we’ll be reading and seeing over the years ahead. If you’re a DC Comics fan or just an entertainment fan in general, they all mattered. It’s been a great year full of both ups and downs, but these are the big ones. These are our DCComics.com “Ten Moments that Mattered” for 2014.

For a year where no DC Entertainment movies were actually released, 2014 was a great year for fans excited to see their favorite DC Comics super heroes brought to the big screen. We’ve already discussed Warner Bros.’ release of its upcoming DC Entertainment theatrical slate. Well, for a certain number of fans, that was actually the second most exciting announcement this year.

On December 2^nd, much of the cast list for 2016’s Suicide Squad movie was released, and it certainly impressed. Will Smith as Deadshot! Tom Hardy as Rick Flag! Jared Leto as the Joker! (!!!) For a potentially darker movie where audiences will be cheering on a team of super-villains, it’s quite an A-Level roll call. However, we’d argue that the most significant cast member is one who isn’t yet a household name.

Margot Robbie as Harley Quinn.

Anyone who’s familiar with Robbie’s work knows that the casting makes perfect sense. However, it’s the fact that Harley Quinn is coming to film that really makes this announcement important. Since her introduction on Batman: The Animated Series, Harley Quinn has gone on to become one of DC’s most popular characters. She’s a favorite of cosplayers and collectors, and has been a staple of the popular Arkham and LEGO Batman video games and anchors her own bestselling comic series. However, despite the continued popularity of Batman as a franchise, Harley has never yet appeared in a live action film. (A variation did appear on the short-lived Birds of Prey TV series, and she was a fun Easter Egg last season on Arrow’s Suicide Squad episode, but neither gave fans a glimpse of her in action.)

With Batman's solo film future still unclear, including Harley in Suicide Squad means that her fans will see her brought to life much earlier than she would be otherwise, in a film in which she likely won't have to face—and potentially be brought down by—the Bat. If she proves to be a breakout character in the film, could a villainous new star be born?

Crazier things have happened.

Be sure to check DCComics.com again tomorrow for another moment that mattered in 2014.