The term 'Greek Hero' refers to four characters from Greek mythology: AJAX, HERCULES, Perseus, ODYSSEUS, and Herakles. AJAX was a great warrior in the Trojan War, known for his strength and courage. HERCULES was a demigod, son of Zeus, who performed twelve labors to atone for his sins. Perseus was a hero who slew the Gorgon Medusa and rescued Andromeda from a sea monster. ODYSSEUS was a cunning warrior who fought in the Trojan War and later undertook a ten-year journey home. Herakles was a demigod, son of Zeus, who performed twelve labors to prove his strength and courage. All four of these characters are celebrated in Greek mythology as heroes who overcame great obstacles and achieved great feats.