Who were some of the main gods and heros?

In ancient Greek mythology, some of the main gods included Zeus, the king of the gods; Hera, the goddess of marriage; and Poseidon, the god of the sea. Prominent heroes included Hercules, known for his incredible strength and twelve labors; Perseus, who famously beheaded Medusa; and Achilles, a central figure in the Trojan War known for his near invincibility. These figures played significant roles in various myths, often embodying human traits and moral lessons.