First there are "The Nordics".  They share some common physical features with humans, but they are taller than the average person and they have much more of a muscular build than humans.  Here are some features of this type of Alien:  They are between 5-6 and a half feet tall.  They weigh between 120 to 240 pounds.  They have human eyes, their hair is blonde, skin colour is pale white, there are both sexes, male and female, and they are telepathic.  If they were to come to Earth, they would probably have the aliase of a Swede.

 

Another type is "The Greys".  These aliens are 3 and a half to 6 feet tall, they weigh between 65 to 90 pounds.  There eyes are large, black, and oval-shaped.  They have no hair.  There skin in grey and rough.  They have no visual reproductive organs.  Cloning is the suspected form of reproduction.  They are also telepathic.  When people think of Aliens, this is the type they think about.

 

The last type of Alien that I am going to talk about is "The Hybrids".  Many believe that this type of Alien is a result of cross-breeding between Greys and humans.  These Aliens look very similar to humans, with a thin build and a high forehead.  They are 5 to 6 feet tall (full grown), they weigh 90 to 120 pounds, there eyes are like humans, and blue.  Their skin is pale white, the are both sexes, and they are both telepathic and verbal.