Dick Grayson, known as Nightwing, is a pivotal character in the DC Comics universe, particularly in the 'Batman: Hush' storyline. Originally introduced as the first Robin, Batman's sidekick, Grayson eventually adopts the Nightwing persona to establish his own identity as a superhero. In 'Batman: Hush,' Nightwing plays a crucial role as a trusted ally and confidant to Batman. His acrobatic skills, detective prowess, and unwavering moral compass make him an indispensable part of Batman's extended family, contributing significantly to the narrative's unfolding.