Thousands of cases of alien sightinghs catalogued all over the world would prove that 
our planet is regularly visited from at least four main typologies of aliens. 
If we analyze the stories of the witnesses we can notice that all the alins have one 
external structure similar to ours, with one head, a torso, two legs and two arms. 
So we can call them humanoids. 


Alpha humanoids

 They are short beings, between 50 cms and 1.5 meters, with an extremely large head. 
This tipology has been defined of the "Greys" in the United States, based on the 
color of the skin, dark brown or ash. They don't have hair, eyelash and eyebrows. 
The nose is thin and the mouth is one fissure without lips. Very rarely the ears 
are visible. The eyes are long and ovals and are usually protected with black 
contacts. They wear usually adherent suits. According to many ufologists, these 
beings would be extraterrestrial scientists, from the remarkable mental powers 
(that would explain the enormous head), of passage on the Earth in order to 
complete studies and experiments. It is known that they come from the star 
system of Zeta Reticuli. A map similar to this system have been seen from two 
Americans, the Hill spouses, in 1961, during an alien abduction. Usually the 
investigators give a great credit to the descriptions of the Alpha humanoids, 
the famous kidnappers, since their apparitions are often supported from 
physical evidences, like the traces to the ground left from spacecrafts or 
scratches on the body of the kidnapped people. Many times in the bodies of 
the kidnapped people are found implants, really small metal-like things, 
long approximately 3 milimeters, made of a material unknown on the Earth. 
The implants are usually placed  between bones of the fingers of the hands. 
Their objective is unknown, but it is probable that it is used to localize 
the humans that have been kidnapped previously. 


Beta humanoids 

They look like humans, usually blond and with blue eyes. They wear blue-white suits,
belts that they tighten at the waist and monils. The Beta are most known from the 
contactists,  those sensitives who claim of being in physical or mental contact 
with theyr "space brothers", from who they would receive religious-spiritual 
messages. Many contactists believe (me not!) that the Beta are the angels of 
the Bible, delegated to watch over us in order to elevate us spiritually and 
to save us, for the time of the return of Jesus Christ. They are part of the 
Galactic Confederation of the Evolved Civilizations. A figure of relief of 
this space UN would be Ashtar Sheran (from the Metharia planet), commander of 
an interplanetary fleet.
Beta beings sightings have been recently reported in South America.




Beta F beings

Haloed beings that appear like visions to the young sensitive people, coming 
exchanged for Mary, the mother of Jesus. Read more about it in the next chapters.




Beta-2 humanoids

The Beta beings are in fight with the Beta-2 beings. Those are perfidious humanoids 
with a dark-olive skin. These beings are usually called Men in Black cause of their 
rigorously dark clothing and their black cars. They scare the UFO sightings witnesses, 
in order to avoid that, signaling them, they can reveal the existence of aliens. Being 
evil, to difference of the other Beta and the Alpha humanoids, the MIB (Men in black) 
often use unusual weapons like luminous tubes or spheres that launch paralyzing beams.

However the fact that the Alpha humanoids (the Greys) are good or evil is not sure. We 
know that the Alpha are executing a program of hybridization for an unydentified objective 
(more about that in the next chapters). However the more reasonable solution is that some 
Greys are benevolent and work for the Beta beings, while others are rebels who allied with 
the Beta-2 humanoids. That remembers the history of Lucifero (like Beta-2 beings), rebelled 
to God (Beta) and therefore took the control of the hell (maybe the Earth?).
Beta-2 and the evil Alpha (the Greys) would have "signed" a secret agreement with the 
american government, or better to say with the secret CIA (the CIA above the president). 
But about this I will speak in the following chapters. 



Gamma & Delta beings

Monstrous beings, perhaps fruit of the imagination of crazy people.... but not necessarly.