Achilles is the renowned Greek hero who fought valiantly in the Trojan War. He is particularly famous for his unmatched strength and skill in battle, as well as his tragic flaw: his vulnerable heel. The story of Achilles encapsulates themes of honor and fate, culminating in his eventual downfall due to an arrow striking his heel, leading to the term "Achilles' heel" used to denote a person's weakness. His legend continues to resonate in literature and popular culture, symbolizing the hero's journey and the quest for glory.