Matthew Lainus

he is a little kid who lives happily with his parents even after the apocalypse and is friends with other children of the group. When his father is presumed dead he cries, but later he is happy when he finds out he is alive, and confused as to why the others won't accept him back. Ryan easily manipulates his son into believing that the aliens are good and the only way to be with his father would be to kill all the people in the group. Matthew, having fought with his friends who called Ryan a traitor, sided with him and maybe killed a member without Ryan's knowledge, or let Ryan go. When the others found out though, there was a debate on whether to kill him, let him go or keep him imprisoned. In the end a young person of the group lets him go, saying his father will find him when he is in a safe distance from the group's location. The person who let him go (Jack probably) didn't believe Matthew was going to be found, but matthew was found indeed. much later he was returned back to the group as a sign of good will that Ryan loves children. It was a reason to support what he said.