There are at least two Cardassian guls named Toran.
Toran
Gul Toran was a Cardassian officer who arrived on Deep Space 9 in 2370 to oversee the return of Cardassian Underground members Natima Lang, Rekelen, and Hogue, after Elim Garak appraised the Cardassian Central Command that they were aboard the station. Toran viewed Garak with hostility, and convinced the Central Command to have the dissidents killed, rather than exchanging Bajoran prisoners for them as Garak had suggested. Toran offered Garak the task of arranging an appropriate "accident" for Lang and the others, to regain favor on Cardassia. Garak killed Toran when it became apparent Toran had no intention of keeping his word. (DS9: "Profit and Loss")
Toran
Another Gul Toran was an officer in the Sixth Order, who commanded Outpost 61 in the Almatha Sector. Toran reported being attacked by the USS Defiant after it had been stolen by the Maquis in 2371. However, the attack was a diversion created by a ship projecting a false warp signature, so that the real Defiant could attack Outpost 47 and slip into Cardassian territory. (DS9: "Defiant")