Duke Thomas is a vigilante superhero operating out of Gotham City. Duke is a Metahuman and the son of social worker Elaine Thomas and the supervillain Gnomon. Duke began his career on the streets of Gotham as the leader of the 'We are Robin' Movement, a vigilante gang inspired by Robin to protect Gotham in the absence of Batman after the events of Batman: Endgame. Following Batman's return, Duke was taken in as Bruce Wayne's protégé and became the newest member of the Batman Family as The Signal. Duke is currently a member of the Outsiders. Duke Thomas was created by Scott Snyder and Greg Capullo , first appearing in Batman (Volume 2) #21. (2013)

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