Baron is really Principal Burr (Matthew Broderick) who was previously believed to be dead. Because the audience has been led to believe that the only survivors of the apocalypse were under the age of 18, this revelation is truly a head-scratcher. Principal Burr was one of the first characters we met on the show, and he actually was the narrator in Episode 4, during which he said that he had died during the apocalypse.
Josh learns Baron’s real identity when he is captured and put in a cage. After escaping, Josh realizes who Baron really is, and like us, he’s confused as to how Principal Burr managed to survive (all the other adults become Ghoulies aka zombies).
But, like Ghoulies, Principal Burr needs the blood of children in order to survive. The difference between him and the Ghoulies? He doesn’t feel one ounce of guilt after eating children.
Source : https://www.distractify.com/p/daybreak-baron-triumph