Minor Characters
Lev Chestov
Chestov (Shestov) is a 19th/20th century a Russian existentialist philosopher.
Karl Jaspers
Jaspers is a 19th/20th century Swiss-German philosopher who is loosely considered to be an existentialist (though he rejected the term himself).
Edmund Husserl
Husserl is a 19th/20th century German philosopher who founded the school of phenomenology, which is the study/philosophy of human experience and structures of consciousness in relation to the world and its objects and sensations.
Pluto
Pluto is the Latinized name of the classical god Hades and is the ruler of the underworld. Sisyphus angers him, most likely for putting Death in chains.
Mercury
Mercury is a Roman god, tasked by Pluto to retrieve Sisyphus from the earth and bring him back to the underworld.
Heidegger
A German philosopher who is generally considered to be one of the most important 20th century philosophers.