In an alternate timeline in which the Cardassians never withdrew from Bajor, the Colonel Koval Changeling was a Changeling of the Dominion. The Colonel Koval Changeling replaced Colonel Koval of the Romulan Tal Shiar. The Colonel Koval Changeling killed Colonel Lovok. The Colonel Koval Changeling was exposed and killed by Kira Nerys.
Fan Fiction