Johnny Riddell is the son of Clayton Riddell and Sharon Riddell. Johnny is a normal, average 12 year old boy, who has a mobile phone and usually mucks around with his friends. He is a witness to The Pulse. He and his friend witness one of his friends get killed by one of the phone crazies and also finds his mother is turned into a zombie. After receiving a bad dosage of The Pulse Johnny loses most of his memory, and loses the ability to function. Clay puts a phone to his son's ear, hoping to send his son back to normal.