Main antagonist of Among the Impostors.
Among The Impostors
At first he bullied Luke and then he tells Luke it was just a test to see if he was a Shadow Child. Luke soon finds out Jason works for the Population Police. Then he betrays Luke and tries to turn him into the population police. But Nina gets turned in instead.
Among The Betrayed
Is mentioned alot by Nina. At first he is said to be dead. Later in the book it is revealed that he is still alive because the Population Police found him useful.