Ultraman Nexus is a mysterious Ultraman in the series Ultraman Nexus. He is a powerful being of light who bonds with human hosts to fight monstrous threats known as Space Beasts. Unlike many other Ultramen, Nexus has a darker, more serious tone and is central to the story’s themes of trauma, hope, and human resilience. He serves as the main protector against the invading horrors, guiding and empowering his chosen hosts in their struggle to defend humanity.