Symbol of death.
Thanatos, the personification of death in Ancient Greece, is symbolized by the Greek letter Theta and the poppy. Thanatos was Hypnos’ twin brother and was despised by everyone, including the gods. As their time came, he carried out his commands and brought victims to the underworld. He did not, however, make them suffer. People were sometimes able to avoid Thanatos. Alkestis had sacrificed her soul in order for her husband to live. Thanatos arrived to the house to gather her souls, but Hercules was present. In battle, Hercules defeated Thanatos and won Alkestis’ soul. Thanatos had to be defeated and return to the underworld. Thanatos went to get Sisyphus when he was about to die. Thanatos was duped by Sisyphus and ended trapped in Sisyphus’ chains. No mortal could die while Thanatos was imprisoned. He was imprisoned until Ares, the god of war, came to his rescue. Ares was fed up with people not dying in combat, so he set Thanatos free. Thanatos is a modern embodiment of Thanatos, as shown in the Marvel movies. Thanos aims to halve the world’s population in the movies. He makes no distinction between the rich and the poor, the young and the old, the healthy and the sick. He claims that they will die quickly and painlessly.