Pagos is a giant subterranean kaiju appearing in Shin Ultraman. It is one of the early monsters confronted by the Japanese government and the Ultra-Style team, helping establish the film’s escalating threat from mysterious alien and monster incidents. Pagos is portrayed as a destructive, burrowing creature with a rugged, reptilian design and immense physical power. As an early-stage kaiju encounter, it serves to introduce the scale of danger in the story and the growing need for coordinated defense against extraordinary beings.