The D'rahn are an ancient enemy of the Kherubim and Daemonites, who have appeared again after millennia of absence and are planning on taking over the world and the galaxy. The D'rahn claim the Kherubim, their former allies, betrayed them and therefore want revenge on the Kherubim first and foremost. Backlash, being half-Kherubim, and Ferrian, a full-blood Kherubim, are both members of Wildcore, making Wildcore a primary target for the D'rahn. Department PSI-director Antonio Giovanni also hires Zealot, another Kherubim, who has experience fighting the D'rahn.