There were giants in the earth in those days; and also after that, when the sons of God came in unto the daughters of men, and they bare children to them, the same became mighty men which were of old, men of renown.
They are a race of bastard creatures, part-man, part Fallen Angel, possessing great powers and an appetite for violence. Known in the bible as the Nephilim , or giants, these supernatural beings today are officially classified by the U.S. Military as Species-2 (which also includes their offspring, the Fell), but are more commonly referred to as "First Born Fell" or simply "First Born".
First Born vary in appearance from individual to individual. Ancient records document man instances of twelve-fingered, twelve-toed giants, with double rows of teeth and a taste or human flesh. Less humanoid appearance have been depicted as well, including a variety of creatures from mythologies around the world.
In modern times, the earliest declassified termination of a First Born occurred in Southeast Asia in 1962. At the time, the First Born was found to be bound to the service of a Chinese sorcerer aiding the Communist forces of the North Vietnamese Army. Both the sorcerer and his supernatural servant were eliminated.
Distinguishing a First Born from its Fell descendants can be particularly difficult and as yet is not clearly defined by any military standard.
Research into the First Born has revealed that the First Born have walked the Earth for millennia, interbreeding among themselves and with mortal mankind. As generations have passed, the creatures' genes have been passed on, each successive generation becoming weaker and weaker (in modern man, it is estimated nearly twelve percent of the world's population carry dormant, recessive Fell genes).
While most known First Born have been slain during the past ten centuries, there still remain an alarming number of the creatures still at large, on and off-Earth. Even more disturbing is the discovery that First Born have bred amongst themselves, creating a super-human race whose powers are only barely diminished from generation to generation.
Study of these beings ha indicated that most of the world's pantheons of non-Christian religions were in fact headed by First Born or their direct descendants.
As the progenitors of the Fell on Earth, First Born possess great powers and a nearly unlimited stamina thanks to their inherent ability to draw etheric energy from the very fabric of the universe. First Born are considered extremely dangerous and engagement with hostile First Borns is strictly prohibited by U.S. Armed forces, with the exception of Detachment 1039.
While considered nearly unstoppable, First Born are not unkillable. The first recorded death of a member of Species-2 occurred in the 19th Century in the American West, although the details and names of those involved in this encounter have been sealed under Presidential Order until the year 2399.
In 2016, Dr. [REDACTED] theorized that no Fallen Angel has walked the earth for the past two thousand years. This theory was based on the discovery of at least one Fallen Angel in the Surtr solar system. If Dr. [REDACTED]'s theory is true, the number of Species-2 appearing on Earth might be diminishing at an ever increasing rate and is believed to be completely extinguishable with adequate monitoring of extraterrestrial and extra dimensional travelers.