Harley Quinn has gone from being just Joker's girlfriend and sidekick to becoming one of the most popular female comic book stars of all time.

Anyone who's attended a Comic Con this year has already seen that popularity at its height: Harley Quinn cosplayers are everywhere. From the latest iteration of the character as seen in the upcoming Suicide Squad film to the original red and black clad white-faced Harley, it seems that this supervillain and sometimes hero is now more popular than ever.

This Halloween is no exception: Harley Quinn dominates all. According to Google's Frightgeist, Harley tops the list of costume searches for the 2015 spooky season. That's right: Harley ranks even higher than Star Wars and Batman.

But that's not all: Harley also comes out ahead on eBay searches for Halloween costumes: the top costume buy on the auction site is for Harley Quinn-inspired outfits.

Gone are the sexy witches and unicorns this season: other popular costumes include superheroes, pirates, Minions and Disney princesses (although all of these probably have "sexy" versions of their costumes on sale somewhere).

Interestingly enough, Donald Trump is also a popular pick this year.

But Harley Quinn still rules all: the insane psychologist-turned-villainess who became the Joker's love interest and sidekick remains the top Halloween pick, especially with her appearing as a character in the upcoming Suicide Squad film. In that movie, Margot Robbie plays the first live-action version of the character.

Harley's Suicide Squad outfit is a new one for her, but takes its cue from previous versions of the character as seen in comic books and cartoons. Harley's creator Bruce Timm recently commented on her new look in the movie.

"It was interesting," said Timm. "I was frankly a little nervous about what Harley would look like, but I thought she looked really cool. So I'm optimistic, we see."

In the world of cosplay, Harley's popularity was never under question: Harley has long been a popular character at conventions and most con-goers can't walk three feet without seeing someone in a Harley costume.

If you're looking for something unique for this Halloween, stay far away from Harley Quinn. However, if you've embraced your inner Harley and don't care that you'll be one of thousands of Harleys roaming parties Halloween weekend, there are plenty of online resources to help you pull your costume and makeup together to make you worthy of hanging out with Mistah J.

Meanwhile, Suicide Squad premieres on Aug. 5, 2016.

ⓒ 2021 TECHTIMES.com All rights reserved. Do not reproduce without permission.