Thanatos is a powerful deity from the anime series Saint Seiya, known as the God of Death. He serves directly under Hades, the main antagonist, and is one of the twin gods alongside his brother, Hypnos. Thanatos possesses immense power, including the ability to control death and inflict fatal blows with ease. He is characterized by his cold and ruthless demeanor, often displaying arrogance and a strong sense of superiority. Throughout the series, Thanatos poses a significant threat to the protagonists, making him a formidable adversary in the battle against Hades.