Aliens 101

Recently I have been thinking about aliens, and how we create our aliens to be relatively like us in most regards. Take some of the Star Trek aliens, for example: 

This guy, and that guy.

Very humanoid. Along with those are all of the people from BattleStar Galactica and Firefly, aliens from Star Trek and Star Wars, Doctor Who, etc. We seem to like the idea of humans exploring the universe and finding other humanoids. But those are definitely not the only types of aliens the human mind has invented.

There are much weirder aliens...

 Like this giant lump of meat, which is actually an alien (Torchwood) and it's still alive when they cut it up.

And then you have scary.

This is a Predator, which may not be an alien after all, just a human from the future (Primeval). But alien enough by one dictionary definition (unlike one's own; strange; not belonging to one.)

And there are Daleks - they set the bar for scariness, with their insatiable desire to be the only intelligent life in the entire universe and their tendency to exterminate everyone (Doctor Who).

 The Slitheen, who kill humans and take their skin to wear as suits (Doctor Who)...

 The Silence, who make you forget they ever existed when you can't see them (Doctor Who)...

The blue aliens are scary because they seem to be studying us... and yet we can't understand them (Stargate Universe).

There are of course hilarious aliens...

(Men in Black)

And Superheroes...

(Megamind)

(Superman)

And let's not forget the metal aliens...

This is an attacker drone from Stargate Universe, set on autopilot to find and destroy any and all forms of technology that are at or above its level. They escaped, don't worry.

These two are Cylons from Battlestar Galactica. Everyone in Battlestar is technically an alien, but these are not human aliens. Of course, humans invented them...

And the all-famous Cybermen (Doctor Who), not technically aliens, but creatures invented by humans (and made out of humans) usually brought in from another universe or from the future.

And we wouldn't want to leave out a Transformer.

I'm also going to throw a nice alien in, for good measure:

These aliens can morph into anything you want them to be. They are in Star Trek, Next Generation.

And finally, I'm going to leave you with a taste of one of my favourite aliens - the Clockwork Aliens (Doctor Who).

Now, these are probably better classified as alien robots, as they seem to function under only one directive and have no willpower to do otherwise. In that sense, they are slightly terrifying, because they're taking people's internal organs to make their ship function properly, but they're so beautiful! And imagine they weren't evil killing machines - they would make awesome butlers.

This is far from all of the aliens in the fictional universes of Earth, as it leaves out all books and about a million movies and other TV shows, but it's a start.