The description of Battle of God: Warrior Sparta
The story is told mostly in flashback story, after being framed with a scene from the present wherein Kratos,
standing atop the tallest cliff in Greece, laments how the gods have abandoned him and tosses himself into the waters below.
While the player starts the game Battle of God: Warrior Sparta three weeks prior to this event,
Heroes background is told by the Narrator during the game (revealed to be the Titan Gaia in God of War).
Kratos was a fearsome Spartan warrior, and grew his fifty-man squad into an army of thousands via strategy, tactics, ferocity and conquest.
However, in a battle against a barbarian horde, his army was massacred, and, in a desperate measure, Heroes offered his life and service to Ares, the Battle of God: Warrior Sparta , in exchange for Ares defeating the Barbarians.
Ares, sensing enormous power in Kratos, accepted his offer and destroyed the Barbarians.
He also granted Heroes the Blades of Chaos, curved blades forged in the pits of Hades that were attached to long chains which were fused to Heroes arms.
Kratos then became Ares' servant, leading his Spartan army in conquering much of Greece.
In one battle, they came across a village that worshiped Athena and put the residents to the sword, and their homes to the flame.
There, Ares put Heroes into a blood lust driven rage and it made him kill anyone standing in his way.
Despite his own foreboding feelings and the warnings of the local oracle, Kratos entered the village's temple and slaughtered all within.
Unfortunately, after his blood-lust cleared, he realized that his two last victims had been his own wife and daughter;
Ares explained that this village had been a test of Heroes power, severing the last of his humanity.
The village Oracle cursed Heroes, binding the ashes of his dead family to his skin;
this new pale coating gave rise to Heroes new title, "the Ghost of Sparta." and it made everyone in Greece fear him.
Kratos renounced his service to Ares and began to wander the Earth, lamenting his deeds, while serving the other gods of Olympus for ten years.