"Thanatos" is Greek Mythology or/and Freudian Psychology which basically boils down to Death worship, or love of death. You can argue definitions, but I'm right and I'm wrong.
I had a brain fart and forgot that Sandaman was DC.
Death is a figure in both projects, Sandman and Agatha, who did not have to be played by two different beautiful women.
In episode one or two of Agatha, Agatha refers to her powers as "purple"
Thanos is Purple.
In the Comics Thanos wants to bang Death.,
In Agatha, Agatha stuck her tongue down Death's throat.
They are both intimate with Death from Marvel.
Movie Thanos is an Eternal, brother of Eros, and not sexually fascinated by the avatar of Death.
Eternals are robot servants of the Celestials used to culture population rates, to the point that a high planetary population triggers the hatching of a Celestial egg, destroying a planet and the 5 billion people living on said plant.
An immortal purple Robot devised to increase the population of the universe, deciding to halve the population of the Universe, doesn't just happen. Thanos is either trying to save life and planets as the ultimate humanitarian, or he's picking a petty fight with his creators, the celestials, by screwing with their Birthrate, because of daddy issues.