Aquarions are fictional mecha units featured in the anime series Aquarion. They are giant robots formed by the combination of smaller units, piloted by humans who share a deep connection. The series explores themes of love, friendship, and the battle against evil forces threatening humanity. In the Aquarion universe, these mechas are powered by the energy of the pilots' emotions, particularly love. The story often revolves around the struggle between the Deava organization, which protects humanity, and the antagonistic Shadow Angels. The series combines elements of science fiction, romance, and action, appealing to a diverse audience.