Antimond was a super carrier of the Protoss Empire. According to the Daelaam archives, it was set to be decommissioned, and Praetor Adamis invited Praetor Fenix to the ceremony. During the event, protoss rebels tried to seize control of the super carrier. However, Fenix managed to stop them.
The Antimond and its decommissioning are possibly based on the film Under Siege.