Dean Becker was an employee working for the Nuka-Cola Corporation at Nuka-World before the Great War. He played the Nuka-Dark Knight in King Cola's Court and worked as assistant to Oswald's magic tricks.
Dean was one of the employees who hid inside the employee tunnels during the initial attack of the Great War. While most of the people in the group were either killed or turned into feral ghouls due to radiation, Dean became a ghoul and outlived many of his colleagues and friends. He was shot and killed during one of the attacks on Kiddie Kingdom, but was immediately revived by Oswald, as he is a glowing one.
He is incorrectly named as Dean Morris within the employee tunnels terminal entries, whereas all other terminals name him "Dean Becker".