Save for the Predator franchise's Yautja and Alien's Xenomorphs, these are the coolest extraterrestrials to ever grace cinema history.

Add Yahoo as a preferred source to see more of our stories on Google. The 21st century has entertained movie fans with some great alien movies. Movies like Arrival, District 9, Prometheus, Avatar, and ...

Don’t expect a straightforward timeline, because continuity is a mess with the Alien and Predator timelines (even if, as in this list, you choose to ignore tie-in comics, novels, and games). Predator: ...