Biurk was a Devaronian captain who commanded the Shamunaar during the Second Galactic Civil War. The Shamunaar was the flagship of the picket screen monitoring the Bothans, who had declared their support for Corellia and readied assault fleets which the Galactic Alliance was keeping a close eye on. Should the Bothans attempt to leave the system, the Shamunaar would forewarn fleet elements stationed at the Blockade of Corellia, amongst others.