Majestic Poseidon-inspired character from Greek mythology, envisioned as a One Piece character with a symmetrical, muscular physique, depicted in full body with intricate details. The scene is illuminated by dramatic, cinematic lighting with high contrast, perfect for a character concept art piece suited for Artstation. The character stands against a dynamic water background, showcasing an 8K resolution for stunning clarity. Modify the attire to include elements of ancient Greek armor combined with fantastical maritime accessories, emphasizing a powerful and commanding presence.