Henry Prudence Hart, better known by his superhero alias Kid Danger, is the central protagonist of the Henry Danger series and a recurring figure in its extensions. He begins as an ordinary person in the fictional city of Swellview who stumbles into (and eagerly accepts) a secret after-school job as the sidekick-in-training to the indestructible hero Captain Man. Over the course of the story, Henry evolves from a somewhat naive, ambitious, and possessive sidekick into a confident, skilled, and independent hero who operates in a new city while maintaining deep ties to his original team.