The Kallusians were a race of humanoids with deep pink skin, with white or gray hair. Kallusians come from the planet Kallu, third from the sun in the Kallu-Kan star system in the Andromeda galaxy. The Avengers drove a group of Kallusians from their temporary refuge in Earth's Arctic for a distant section of the galaxy where they would again battle the aliens who first drove them from Kallu.