Jason Barstow is an antagonist in the Shadow Children series.
He is a manipulative dude.
Among The Impostors Edit
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 Edit
He is mentioned several times by Nina. At first he is said to be dead, but later in the book it is revealed that he is still alive because the Population Police found him useful.