Glenn is the son of Stan's half-brother, Rusty, and his wife, Sooleawa'Uha.
In "There Will Be Bad Blood", Stan originally believes them to be poor and makes a show of inviting them to Thanksgiving each year to show off his belongings. Stan brags to Rusty about his television while Glenn and Steve play games. The Smith's later find out that Rusty and his family are far wealthier than they let on. Glenn shows off his game holographic game room to Steve where they wear suits to manipulate their game that surrounds them.
Voiced by Jeff Fischer.