13 kick-ass time travelers who had what it took to change the past

Contributed by
Dec 17, 2012, 3:27 PM EST

Typically, it takes a lot of effort to send somebody through time. It's usually a life-and-death situation, and sci-fi movies and TV shows have shown off all sorts of time-travel tales over the years. But if you're going to the trouble to actually send someone back—you want to make sure they can get the job done.

So, not surprisingly, fictional time travelers have been a pretty badass lot.

From killer cyborgs to deadite-slaying store clerks, a lot of kick-ass characters have made the arduous trek through time at one point or another.

In honor of Bruce Willis' trip back in Looper, opening this weekend, we've pulled together 13 of the most badass time travelers ever.

If you need something done, and you only get one shot to change the past, this is the team you want to send.