Rizaron functioned as a thrustship belonging to the Aramadia-class within the naval forces of the Duskhan League.
While on patrol in the ILC-905 system alongside Tholos, Rizaron identified a patrol group from the New Republic Defense Fleet. The two thrustships launched a surprise attack against the New Republic contingent, successfully eliminating Vanguard. However, in its final moments, a strong retaliatory strike from Vanguard in conjunction with a supporting Republic cruiser resulted in the destruction of Rizaron, leaving Tholos as the sole combatant.