From Final Fantasy 7. Known as the "
calamity from the skies", it crashed to
earth approximately 2000 years before the
game starts, creating the
North Crater. The
ancients then gathered there to help the planet focus its
energy on healing itself. Once done with that task, the planet warned the
ancients to flee, but it was too late. A
spectral figure,
Jenova in disguise, approached the ancients, infecting them with a
virus that turned them into
monsters. Jenova then continued the plan to infect ancients worldwide.
The planet created the
Weapons to combat Jenova, but a few surviving ancients locked Jenova away. The weapons were then left to roam the planet.
Approximately 37 years before the beginning of the game,
Shin-Ra scientist
Dr. Gast discovered Jenova and brought it to
Nibelheim. He mistakenly identified it as an ancient. In Nibelheim, the project tried to breed Jenova with a human, to create more ancients.
Hojo and
Lucretsia, two people working on the project, were married, and
Lucretsia became
pregnant, while
Hojo infused her
embryo with the cells from Jenova.
After giving birth to her part Jenova son,
Sephiroth (who would later become the cheif
villain of the game), Lucretsia's body collapsed from the strength of the Jenova cells.
Thanks to rpgamer.com