Walter "Wally" Graham is the step-son to Will Graham. It is never specified who his biological father is in the show. He is a young child with a very serious attitude. There are a few instances where Walter is seen smiling, He is seen eating dinner with his family, including dogs and his mother, before being attacked by a man covering his face. Walter is instructed to escape outside, and he is seen hiding behind a car before escaping with his mother. Walter, despite the clear fear, is still very angry after the events of Season 3 Episode 11, as he talks to Will in the hospital. He says that he should kill the 'crazy guy' trying to hurt them. He continues to watch baseball, as Will leaves.