Thanatos (Θάνατος) the greek personification of Death is the god responsible to guide the dead to the underworld. His genealogy is explained for the first time in the poem Theogonía by Hesiod, who says that He is son of Nyx (goddess of the Night) and Erebos (god of the Darkness). The poet also describes his twin brother Hypnos who personifies the Sleep.
His obscure nature gave him very negative attributes and to emphasise that idea, it was given to him more gloomy siblings such as “Suffering”, “Doom”, “Retribution”, “Deception”, “Blame”, “Strife” or “Old-age”. This dark atmosphere that surrounds him tends to get worse throughout the ages, specially during the Middle Ages. Among some other moralistic concepts of Hell or Sin, the Death was used as a tool to inflict the most apolitical fear on people, in order to manipulate them effortlessly.
In the original personifications, Thanatos appears as a winged young man; the figure evolved to his most popular aspect during the 14th century in Europe . At this time, when the world faced its worst pandemic, he became to be known as “The Grim Reaper”.