Lemayne was a Human male Alderaanian noble who held the title of baron during the New Sith Wars. He founded the mercy organization Grace Command as a cover for his intelligence operations in the service of the Galactic Republic. One of Grace Command's operations included Operation Deluge which involved inundating Sith-occupied space with the spice Deluge to undermine the Sith war effort without having to divert substantial government resources. The operation was conducted under the cover of the mercy organization Grace Command and the supposedly voluntary Starfighters squadron Devil Squadron. In the process, entire civilian populations were inundated with the drug which destabilized entire planets throughout the Grumani sector.