Battle of Sevarcos In the months following the Battle of Endor , a battle occurred in a spice mine on the planet Sevarcos . The New Republic fought with Imperial forces at the mine . While the Empire seemed to be winning , three slaves Greybok , Palabar , and Hachet turned the tide of the battle by releasing three imprisoned rancor s . The rancors rampaged through the Imperial forces , allowing the New Republic to claim victory and liberate the slaves . Prelude . During the Age of the Empire , the Galactic Empire dispatched many alien slaves to toil in a spice mine on the planet Sevarcos . The mine was guarded by Imperial soldiers and at least one Zygerrian slaver . Conditions at the mine were harsh and brutal with many slaves suffering injuries and ailments . Discipline was harsh and one attempted escapee , the Wookiee Greybok , had one of his arms amputated as punishment . The mine was also guarded by rancor s , who were forced to march in the outer canyons to keep the slaves from attempting to escape . The battle . Following the Battle of Endor , the Rebel Alliance established a new galactic government called the New Republic . As the Galactic Civil War spread across the galaxy , New Republic soldier s saw action on numerous worlds including Sevarcos . The fighting eventually spread to this particular spice mine and many miners were wounded or killed during the bombardment . Imperial forces clashed with the New Republic forces and managed to gained the upper hand . Amidst the fighting , three slaves debated their next move . While the Weequay Hatchet proposed escaping their Imperial slavers while they still had the chance , Greybok urged his comrades to aid the New Republic soldiers . The Quarren Palabar agreed with Greybok and argued that if they escaped , the Empire would come after them . Greybok proposed freeing the three rancors housed inside the corral . Deciding to aid their New Republic liberators , Greybok charged into the fray . He encountered an Imperial soldier in mechanized battle armor and threw him into a crevasse . Putting his plan into action , Greybok used a large rock to smash the lock of the gate open . This caused the electric corral fence to short - circuit . After the gate opened , the rancors charged out and attacked the Imperials . One of the rancors caught Greybok and flung him to the ground . At that point , Greybok was attacked by a Zygerrian slaver who proceeded to torture him with a blaster called a needler . Before the slaver could kill him , Hatchet came to Greybok ' s rescue and bludgeoned the Zygerrian to death with a rock . Aftermath . Greybok ' s actions turned the tide of the battle in favor of the New Republic . As Greybok and his companions watched , New Republic soldiers rounded up the slavers and threw the spice canisters into the fire . The big rust - red rancor was killed but the smaller gray - green and rust - red ones managed to escape the battlefield . When Hatchet asked one of the New Republic soldiers what would happen to the slaves , the female soldier replied that they were free and kicked a stormtrooper helmet aside . Greybok , Hatchet , and Palabar then decided to explore the galaxy as freed men . The three former slaves would late take part in the liberation of Kashyyyk , which ended the Imperial subjugation of the Wookiee species . Behind the scenes . The Battle of Sevarcos first appeared in an interlude chapter in Chuck Wendig ' s 2015 novel " Aftermath " . It was told from the point - of - view of the Wookiee Greybok .