MARCH 1 UPDATE:

The first round is over, and each division is down to four lady bosses.

Haters will say the Antiheroes division is rigged. And Mystique would probably assassinate those haters, because she is in a good position to outlast everyone else in this division. That's partly because the ice-cold Emma Frost upset Psylocke in a barn burner first-round matchup.

Mystique goes up against a fellow blue devil, Nebula, in the second round. But if there's going to be another upset in the division, it will be because YOU say so. Vote now on Twitter.com/CNET or click below! 

Emma Frost vs. Elektra

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Forget March Madness. We have a much geekier tournament for you: the Women of the Marvel universe bracket smackdown. There are four divisions with 32 badass heroes and villains from across the Marvel Cinematic Universe, comics, X-Men movies and crossovers and more. The final matchup will pit one goodie against one baddie ... and only one woman of Marvel will be left standing in our mega bracket.

Best of all: you get to decide who that is right here (click out to Twitter for the full thread!).

Mystique vs. Typhoid Mary

Meet the Antiheroes division. These villains are ambitious, remorseless and determined to win, no matter the cost. Click the names for more on each icon's history, powers and appearances. (Note some appeared under different names in Marvel's comic books.)

See who's winning and who's been knocked out every week on our main bracket page. Plus, check out the other categories here: 

Originally published Feb. 24 at 6:30 p.m. PT.Update, at 11:48 a.m. PT: Added updated Twitter voting thread.

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