the Greys

the Greys originate in the Zeta Reticula system

near the Orion open cluster.

The Greys seem to be a race that reproduces by cloning.

They are the most often reported by abductees

as being totally emotionless.

They can control humans by the use of the Stare

which paralyses and disrupts neural processes.

They can render humans comatose at will.

Also, using a telepathic technique known as Mindscan,

they can rapidly absorb the contents of the human brain.

They appear to be running a Breeding Program,

which involves collection of human genetic material

for the purpose of breeding a hybrid species.

They also seem to be experimenting with implants

of some sort, possibly as remote control devices.

The small Greys are between  two feet six inches

and four feet tall, with large black slanted wraparound eyes.

Nose and mouth both appear vestigial.

They have very large heads with pointed chins,

and delicate bodies with long arms with three fingers.

There are  no apparent sexual organs.

The skin colour is  generally some shade of grey,

thus the name.

the medium Greys are usually a bit taller.

They appear to give the orders,

and usually conduct the Mindscan.

They, in turn, seem to answer to the Grails,

tall (7-8 feet) praying mantis like creatures,

reportedly immensely strong.

a Grail ?