Poseidon is the Greek god of the sea, known for his powerful and temperamental personality. He is often depicted with a trident, which symbolizes his control over the waters. Poseidon is said to be the brother of Zeus and Hades, and plays a significant role in Greek mythology as one of the twelve Olympian gods. He is known for his ability to create storms and earthquakes, as well as his fierce loyalty to his realm. In art and literature, Poseidon is often portrayed as a majestic figure with a flowing beard and regal demeanor.