Data Seven of Nine Star Trek cosplay Missions New York
photo: Victoria McNally

With 50 years of history, 13 movies, 5 series (with another on the way), and 726 episodes total, it's tough to keep track of all the obscure trivia that "Star Trek" has to offer. 

But if you're up for the challenge, then let us — and some diehard "Star Trek" cosplayers — put you to the test.

This weekend, Trekkies flocked to New York City to celebrate their love of the classic science fiction series at Star Trek Missions, and some of them wore some amazing costumes. But can you guess just who they're supposed to be? Let's find out: