In the majority of sci-fi films, death is expected. Usually, you can see these deaths coming a mile off. Sometimes it's clear as soon as you see the character; they're annoying, or uninteresting, or cocky, or rude, or all of the above, and you know they won't last long.
This can sometimes dampen the deaths themselves. You know it's coming, it happens, and it doesn't effect you. The best deaths are the ones which throw you off. Be it characters killed off too early, big named actors dispatched with little care, or the end of a false protagonist, deaths in the world of sci-fi are much more effective when you don't know what's happening - when you have to pause the TV and re-wind the scene just to make sure it actually. Just. Happened.
The following list will have a look at the most sudden, out of the blue deaths ever put to the screen in a sci-fi film, from game-changing monster kills, avoidable demises and brilliant plot twists.
Naturally, major spoilers will follow. In any case, enjoy, and make sure you never lock yourself in a room with an alien...
WhatCulture contributor, aspiring author and lover of all things Buffy, zombie, TV and movie. Usually found rambling about how Jack Nicholson is the greatest actor of all time and watching the same six shows on repeat.