Sefton Hill: Sefton Hill. Director: Batman: Arkham Knight. Sefton Hill is a British video game developer who works at Rocksteady as creative director. He first worked at Argonaut Games. He started working on Rocksteady's first game Urban Chaos: Riot Response. He helped develop the acclaimed Batman: Arkham series of video games with 2011's Arkham City as the peak of the franchise. He later developed Suicide Squad Kill the Justice League, which is...
