Roy Zimmerman

 is the unborn dream child of Dr. Will Zimmerman and Abby Corrigan.

Due to the fall of Praxis' security measures, a giant psych worm escapes from Hollow Earth and breaches the Earth's surface just outside of Juárez near the US-Mexico border. During the Old City Sanctuary's response, Dr. Helen Magnus and Will investigate what they initially believe to be an off-season migration of rock lizards. When they arrived, the worm surfaced right underneath them, hitting them with a psychoactive venom that put both of them in a shared crazy dream world.

In this world, Will and Magnus are living simple domestic lives as neighbors across the street from each other; residing in a suburban neighborhood on the coastal edge of Old City. Will is married to Abby, and they are expecting their first child together; the gender has remained a secret (both parents opting to wait for it to be revealed at birth). Because of this unknown factor, Will and Abby have light-hearted disagreements on certain things stemming from Abby wanting the baby to be a girl and Will wanting the baby to be a boy.