Peter Michael Ellison,

Astrids little brother, is a mentally handicapped 4- year old with autism. who created the FAYZ barrier and while doing so prevented a nuclear meltdown at the power plant. He is normally quiet, only talking when a trigger word, such as "window seat" is said. He is usually playing his game boy. He is shown possesing powers, teleporting and telekenisis. In Hunger, his dreams come to life, most often being a Nestling doll. The Darkenss thinks of him as a Nemesis. In Plague he 'dies' (we don't really know due to the fact that the last one hasn't come out yet)