Will's older brother, photographer, and frequent ally in the fight against the Upside Down.
S1·E2Chapter Two: The Weirdo on Maple Street
S1·E4Chapter Four: The Body
S1·E6Chapter Six: The Monster
S1·E8Chapter Eight: The Upside Down
S2·E8Chapter Eight: The Mind Flayer
S2·E9Chapter Nine: The Gate
S3·E3Chapter Three: The Case of the Missing Lifeguard
S3·E5Chapter Five: The Flayed
S3·E8Chapter Eight: The Battle of Starcourt
S4·E3Chapter Three: The Monster and the Superhero
S4·E5Chapter Five: The Nina Project