Words cannot express just how cool aliens are. If you didn't already know, there are like, 8 different kinds of aliens and they are all awesome in their own ways.
Grey AliensGrey aliens (or gray aliens if you are a stupid American) are probably the most well known. They're humanoid and have grey skin, two black eyes (as in their eyes are black, they (probably) haven't been in a barfight you idiot)), a small mouth and no genitals. They don't need genitals because they're too cool to care about that. Pretty much everyone has seen a grey alien at least once in their life. If you haven't then I'm sorry but you must either be blind or just dont pay attention all that much. In either case, sucks to be in your position. In my personal experience, I've seen maybe six or seven greys on two occasions. The first one I saw was playing with the fax machine at my old house for some reason. The other time there was a group of them swimming in my garden pool. I tried to take a photo but when I found my camera they had already gone.
Nordic AliensThese guys are are like medieval warriors. They have fair, white skin, death-metal blonde hair and blue eyes. My cousin Sarah said she met one in Norway on a school trip and he was super handsome and was fluent in Norwegian. He had a red sports car and sometimes wore sunglasses.
Flatwoods Monster AlienThis guy has only really been seen in West Virginia, USA. The alien is made of metal and comes from the planet Metal. He was flying over the town of Flatwoods in Braxton County when he fell out of his flying saucer which caused it to crash land. He has lights in his eyes which help him to see, which was useful given he crashed in the dark. Some people stumbled accross him and he looked directly at them. He had a pointy head, hands that looked a bit like claws and he smelled really bad. He started to glide towards the group at which point they got so scared they ran away. When the area was investigated, they found alien goop as evidence but by that time the alien had fixed his flying saucer and flew away.
ETET (or the extraterrestrial) is a stupid idiot alien from a movie aptly named ET: The Extraterrestrial). A bit like the Flatwoods Monster alien, he found himself on Earth accidentally and the idiot went exploring away from his parents and got lost. He's brown and has a heart condition where you can see it pumping. He likes to look after flowers, eat M&Ms, make bicycles float and dress up in girl clothes. He made a telephone out of old electronics (not that impressive, really) to call his parents to come collect him when he'd finished hanging out with his new Earthling "friends".
LizardmenLizardmen live on Jupiter in little sandcastles and they have blue blood. Apparently, some of them live on Earth and pretend to be people so they can influence politics and stuff like that (because they have nothing better to do lol). Some people say that George W. Bush is a Lizardman alien but I think they're mistaken.