Planet Q-B is a planet in the Spaceman Spiff universe. It was mentioned in a single Sunday comic where Scum Beings from the planet had pursued Spaceman Spiff to the space around Planet Gloob.
In another comic, Spiff referred to scum beings from Planet Q-13; Q-B and Q-13 may be part of a same solar system, ruled by the scum beings.
- ^  Gocomics.com: December 15 1985
- ^  Gocomics.com: November 20 1987