Adam Strange; Alanna; Jakarta (a dust devil, name revealed in this story, last seen in Mystery in Space #68, next seen in Mystery in Space #84); unnamed citizens of Melbourne, Australia; unnamed citizens of Ranagar; a female hobby shop clerk in Melbourne
Adam Strange intercepts the Zeta Beam at Lake Makadi, Tanganyica, Africa and returns to Rann, unknowingly carrying Jakarta, the last surviving Dust Devil, who had hidden in Adam's holster on the planet Rhynthar (see Mystery in Space #68). Seeking revenge, Jakarta attacks Ranangar. The Zeta radiation wears off and returns the pair to Earth, which the dust devil also plans to conquer, near Melbourne, Australia. Adam discovers that static electricity can freeze Jakarta, traps him with a Wimshurst Machine (which discharges electricity) and then turns the Dust Devil over to Australian authorities.