Cain

Cain was the first of Adam and Eve's two sons. He was thought to have murdered his younger brother Abel out of jealousy. It was later discovered that Cain killed Abel for a Piece of Eden that he held. Cain was also the founder of the Templar Order.

Biography
Cain was the first son of Adam and Eve, two human descendants of the First Civilization. Cain killed Abel to steal the Piece of Eden in his possession. His homicide was the first in recorded human history.

Cain's mark, which he was given for killing Abel, became the symbol of the Templars, which they work under to collect more Pieces of Eden. Subject 16 also referenced quotes from the Church of Jesus Christ of Latter Day Saints' "Pearl of Great Price" scripture.

The hidden message "Templar texts adapted by Mr. Smith" is written in Morse code in a Glyph sequence (Mr. Smith being an allusion to Joseph Smith, the 19th-century preacher who founded the LDS Church), implying that the Mormon or LDS version of Cain and Abel is more accurate, or at the very least, an accurate reflection of the Templar's version of events.

The relatively unique title of "Master Mahan" is mentioned as the title Cain gave himself for being the master of the great secret. The term "Mahan" is used within the LDS Church.