Arthur Curry, known as Aquaman, is a key character in the anime series 'Seigi no Renmei.' Born to a human father and the queen of Atlantis, Arthur possesses the unique ability to communicate with marine life and commands incredible strength both on land and underwater. He grapples with his dual heritage, striving to balance his responsibilities to the sea and the surface world. As a member of the Justice League, Aquaman plays a crucial role in protecting the planet from various threats, showcasing bravery and leadership throughout the series.