The Scourge Aasimar believe it is their duty to exterminate everything they consider evil, first only on their world and with the invention of the Spelljammers now also in the rest of the universe. They split from the Protector Aasimar when the Protectors wanted to make peace with the Fallen Aasimar after Areth's influence over them was broken, yet the Scourge Aasimar believed they had to be eliminated entirely to root out all corruption. After the first civil war ended in stalemate the Scourge Aasimar have regularly attempted to destroy the Fallen Aasimar by any means necessary, however the intervention of the Protector Aasimar have often foiled their plans.
Most Scourge Aasimar remain on their home world to continue their fight to cleanse Winged World from evil, but a significant portion of them have recognized there is greater evil to be found in the universe and have set out into the void to join The Traveler Maevin in her eternal crusade.