Kratos was the personification of strength and power in Greek mythology, son of the Titans Pallas and Styx. He was the brother of Nike (victory), Bia (force), and Zelus (zeal), and the four siblings were the enforcers of Zeus. Along with Hephaestus and Bia, he managed to constrain Prometheus and bind him at the peak of the Caucasus, as punishment for his actions against Zeus' will.
According to other sources, he was an illegitimate child of Zeus with an unnamed mortal woman.
Kratos Is also called Cratus, Cratos.