Carl Grimes is a survivor of the outbreak in AMC's The Walking Dead. He is the son of Rick and Lori Grimes and the half-brother of Judith Grimes and R.J. Grimes. During the initial outbreak, Carl believed his father to be dead, so he and his mother joined Shane Walsh to travel to Atlanta to the refugee camp. As time progresses, Carl slowly becomes hardened due to the severe loss of life and the environment around him.