 Rex Britten, portrayed by Dylan Minnette, is Michael's son who is featured in Michael's "green reality". Green is Rex's favorite color. He is a teenage school student. Outside of school, Rex claims he is going to the beach, although he is really going to his best friend Cole's house to work on a motorbike with him. Like Hannah, Rex is also very emotional, and often gets angry, due to Hannah's death in the crash. He kept a tennis racket to remain, and make him deal with Hannah's death. However, Cole accidentally broke it, Rex fights with him because of this. He later apologizes to him. He hates "cereal and soda night" because Michael doesn not cook "actual food" for dinner. Rex has an aunt named Carol, who is mentioned in "Two Birds", in Michael's "green reality". She wants to spend more time with Rex since the crash.
