Kratos, the protagonist of the action adventure game "God of War" series, was born in Sparta, Greece, and served as commander in chief in the family, so he was called "the soul of Sparta". Kratos personally killed his wife and daughter because of a plot against Zeus arranged by Ares, the Greek god of war. Later, he became the Avengers, destroyed Ares and became a new generation of God of War. Later, his father Zeus, who was related by blood, made a taboo and was ousted from the throne, so he decided to take revenge on Zeus. After destroying the temple of Olympus and defeating Zeus, he and his son Atreus lived in anonymity somewhere in the north, and decided to change his violent behavior and start a new life.

Kratos is a character that scares ghosts and gods. As a demigod, he has far superior physical strength and wisdom, and the cruel Spartan education endowed him with unyielding character and confidence in facing powerful enemies. In the game, he can freely use different weapons and magic, which he obtained from various gods and monsters.

Throughout the Greek period, Kratos experienced several adventures, trying to avoid disaster and change his destiny. During this period, he was an arrogant figure who wanted to forget everything in the past, and he often carried out extremely violent acts. In the late Nordic period, Kratos tried to make himself better, controlled his anger and learned how to be a real father.