Icarus Seijin is a fictional alien character from the tokusatsu series Ultraseven. He is one of the many extraterrestrial beings encountered by Ultraseven and the Ultra Guard, typically portrayed as an invading or hostile force rather than a recurring ally. As a representative of the Icarus race, he contributes to the series’ theme of strange and often dangerous alien civilizations threatening Earth. His role is usually minor but memorable, serving as part of Ultraseven’s classic roster of monsters and aliens.