Gruna was the male Nessie captain of an Ithullian ore hauler, which carried valuable mutonium ore through the Stenness Node in the years leading up to the Great Sith War. Gruna's ship often came under attack by pirates, such as Finhead Stonebone and his gang, due to the hauler's expensive cargo. To counter this, Gruna paid local crime lord Bogga the Hutt to provide security while the ore hauler made its runs through the pirates' territory. On one particular shipment in 3999 BBY, Stonebone's group ambushed Gruna's ship, killing Bogga's enforcer, Dreebo, and siphoning some of the ore. However, Bogga's warship, Enforcer One, dropped out of hyperspace and captured the pirates, saving Gruna, his crew, and his cargo.