Who is Cronus brother?

Cronus' brother is Zeus, who is one of the Olympian gods. In Greek mythology, Cronus was the leader of the Titans and the father of Zeus, along with other deities like Hestia, Hera, Demeter, Poseidon, and Hades. Zeus ultimately overthrew Cronus and became the king of the gods, establishing a new order among the deities. Other notable siblings of Cronus include Oceanus, Coeus, Hyperion, Iapetus, and Theia.