In Greek mythology, who judged the deeds of the deceased?

Minos, Rhadamanthus, and Aeacus are the judges of the dead. They judged the deeds of the deceased and created the laws that governed the underworld. However, none of the laws provided a true justice to the souls of the dead, and the dead did not receive rewards for following them or punishment for wicked actions.

Aeacus was the guardian of the Keys of the underworld and the judge of the men of Europe. He was the son of Zeus by Aegina, a daughter of the river-god Asopus, and thus, brother of Damocrateia. In works of art he was depicted bearing a sceptre and the keys of Hades. Aeacus had sanctuaries in both Athens and in Aegina, and the Aeginetans regarded him as the tutelary deity of their island by celebrating the Aeacea in his honor.

Rhadamanthus was supposed to judge the souls of easterners, Aeacus those of westerners, while Minos had the casting vote (Plato, Gorgias 524A). He is portrayed in Books 4 and 7 of Homer's Odyssey. Virgil (69–18 BC) makes Rhadamanthus one of the judges and punishers of the unworthy in the Underworld (Tartarus) section of the Aeneid.

Minos appears in Greek literature as the king of Knossos as early as Homer's Iliad and Odyssey. After his death, Minos became a judge of the dead and had the deciding vote.