On stardate 83685.3, B'vat had gained possession of a planet killer and was keeping it in the Imaga system. The crew of the USS Leviathan, having been led to Imaga by a member of B'vat's own personal guard, formulated a plan to disable the planet killer. It was successful, and B'vat was defeated.
- Star Trek: Federation Legacy – "The Price of Liberty" (First mentioned)
- Star Trek: Federation Legacy – "The Doomsday Device" (First appearance)