Maia Tsukigane is a key character in the anime series 'Sousei no Aquarion'. She is initially introduced as a mysterious girl with amnesia, found in the ruins of an ancient civilization. As the series progresses, Maia's true identity and powers are revealed, playing a pivotal role in the unfolding events. Her character is defined by her journey of self-discovery, loyalty to her friends, and her connection to the legendary mecha, Aquarion. Maia's interactions with the other characters drive much of the series' emotional and dramatic arcs, making her integral to the storyline.