1. Apollo: Apollo was the god of music, poetry, prophecy, and healing, among other things. He was Hermes' older half-brother, born to Zeus and Leto.
2. Artemis: Artemis was the goddess of the hunt, wilderness, and childbirth. She was Hermes' older half-sister, also born to Zeus and Leto.
3. Ares: Ares was the god of war, violence, and bloodshed. He was Hermes' half-brother, born to Zeus and Hera, the queen of the gods.
4. Aphrodite: Aphrodite was the goddess of love, beauty, and fertility. She was Hermes' half-sister, born to Zeus and Dione.
5. Athena: Athena was the goddess of wisdom, warfare, and crafts. She was Hermes' half-sister, born from the head of Zeus alone, without a mother.
6. Hephaestus: Hephaestus was the god of fire, metalworking, and sculptures. He was Hermes' half-brother, born to Zeus and Hera, though some accounts indicate that he was raised by the sea god Poseidon after being thrown from Mount Olympus due to his deformity.
7. Dionysus: Dionysus was the god of wine, parties, and celebrations. He was Hermes' half-brother, born to Zeus and Semele, a mortal woman.
These siblings make up a significant portion of the Olympian gods and goddesses and represent various aspects of life and the universe in Greek mythology.