Pegassa Seijin is an alien character from Ultraseven, known as one of the Pegassa people from the planet Pegassa. In the series, this species is portrayed as a technologically advanced civilization that seeks peace and survival, often facing conflict with humanity and other forces. Pegassa Seijin’s role is tied to the broader themes of Ultraseven, including coexistence, misunderstanding between species, and the tragedy of war and displacement.