The novel’s main character demonstrates the most growth in the novel. In fact, few other characters are developed at all. Thomas’s growth includes the after effects of events in previous novels as well as the events occurring in this novel. At the start of the novel, Thomas is overwhelmed with rage. Not only is he mad at WICKED, but he is mad at Teresa. He views Teresa as someone negative who has perpetuated all the bad things that have happened over the past events. His bond with her is broken, he can no longer speak to her telepathically, and he appears to be unconcerned by this.

His apparent indifference is furthered not only when he pulls away from her when they are reunited, but also when he chooses not to get his memories back, which she wants him to do. Thomas deliberately separates himself from Teresa. His trust issues extend farther than WICKED and Teresa: he distrusts his entire situation as well as almost every individual around him. Thomas effectively becomes a solo player, although he is with people the entire novel. He is more interested in helping himself or doing what he wants to do (for example, watching the infected man get accosted by a guard in the café).