In my imagination, Poseidon, the Greek God of the Sea, holds a commanding presence. He's often depicted as a sturdy figure with vibrant aqua-blue hair that mirrors the richness of the oceans he reigns over. His eyes, silver like the froth on a high-wave, hold a power that can calm the storm or bring about a tempest.
He's also frequently shown wielding a majestic trident, the symbol of his dominion over the sea. A crown bejeweled with all kinds of sea creatures adorns his head, signalling his sovereignty.
Talking about his attire, he might be seen wearing a chiton, a type of tunic in ancient Greece, in the same intense ocean hue as his hair. And, as per the tales, he rides a radiant chariot pulled by mighty hippocampus, or sea-horses, further asserting his control over the maritime world.
Despite his fierce strength, I believe Poseidon has a heart that resonates with the rhythmic ebb and flow of the sea, embodying both the ocean's fury and its tranquility.