Umbra was a clone trooper in the Grand Army of the Republic's 104th Battalion. Umbra served under the command of Jedi General Plo Koon and alongside fellow clone trooper Wildfire during the Clone Wars. At one point during the war, Umbra and Wildfire were stranded on the planet Felucia and were forced to eat insects to survive. When the war ended, Umbra gave up on killing, regardless of the cause.
During the Galactic Civil War, Umbra joined Wildfire in a rebel convoy that was transporting civilians to a hidden rebel world to escape the Empire. When the convoy was attacked by the Imperial forces, the transport they were on escaped and crash-landed on the planet Tatooine. Umbra, along with the other survivors, set up camp at the crash site, but were attacked by the Stormtrooper Captain Terro and his forces. With the help of Jabba the Hutt's men, Terro was forced to retreat. Umbra and the remaining survivors were brought aboard a skiff and taken to Jabba's Palace.
At the palace, Umbra and the other survivors were imprisoned while Wildfire and the other rebels were forced to work jobs for Jabba. Umbra understood the dire situation they were in and encouraged Wildfire to leave at the first chance he got. Eventually, the rebels fought back and attacked the palace, but Jabba anticipated this betrayal. He brought Umbra and a few other survivors to his audience chamber and chained them by the necks. The rebels managed to make their way to the chamber and defeat the Hutt and his rancor, successfully freeing the survivors. Umbra, Wildfire, and the rest of the rebels and survivors made their way back to civilization, and boarded a transport, leaving the planet behind.
Umbra was a clone trooper who served in the Grand Army of the Republic during the Clone Wars. As a clone trooper, he was cloned from the genetic template of the human bounty hunter Jango Fett and born on the planet Kamino. He served in the 104th Battalion under the command of Jedi General Plo Koon and alongside fellow clone trooper Wildfire. At some point during the Clone Wars, squad mates Umbra and Wildfire were stranded on the planet Felucia for a month where they had to eat nothing but insects to survive. After the end of the Clone Wars, Umbra retired from service, done with killing regardless of the cause.
During the Galactic Civil War at some point before 0 BBY, Umbra accompanied Wildfire on a rebel convoy transporting civilians to a hidden rebel world. The Empire ambushed the convoy and a battle ensued. The transport Umbra was on managed to jump to hyperspace and escape the battle. Eventually, the hyperdrive gave out near the planet Tatooine, where the damaged ship crashed. Umbra, along with the other survivors, set up a camp where they stayed before being attacked by Imperial forces lead by Captain Terro.
A squad of rebels, which included Wildfire, fought back against Terro's forces as the Stormtrooper captain attempted to gather the survivors and bring them aboard his dropship. The rebels were joined by some of Jabba the Hutt's men and fought together to push back the Imperial forces. During the skirmish, Umbra took cover behind a piece of wreckage and eventually ran to safety as the rebel squad escorted him. Overwhelmed, Terro fled with some of the survivors he captured, leaving the rest to fall into hands of Jabba. More of Jabba's men then arrived and escorted the survivors aboard skiffs. While on the skiff, Umbra acknowledged the meaninglessness of the fight to Wildfire, equating it to the Clone Wars and the slaughter of their brothers.
As the group arrived at Jabba's Palace, Umbra was separated from Wildfire. Umbra was sent to the palace's prison while Wildfire and the rest of the rebel squad were brought before Jabba. While in the dungeon, one of Jabba's slaves, a woman named Senza, tended to him and the other survivors. Wildfire was eventually brought down to the prison where he informed Umbra about their forced servitude to Jabba. Wildfire suggested Umbra could help, to which he apologized as he was done with killing, no matter the cause. Umbra also stated that if Wildfire had a chance to save himself, then he should take it and leave him behind. After their conversation, Wildfire left to do a job for Jabba while Umbra stayed behind in the cell.
After a successful mission, Wildfire and the rest of the squad returned to the prison to check on the survivors. Wildfire checked on Umbra who was sitting on his bed and picking at his food. Umbra recalled the time when he and Wildfire were stranded on Felucia and forced to eat insects, to which he stated he would prefer the insects over the slop provided to him. Umbra asked Wildfire if he did what the Hutt asked, to which Wildfire nodded. Then he asked if they were free to go, to which he remained silent. Understanding the dire circumstances they were in, Umbra told Wildfire that Jabba will never free them and that he should just leave and never look back. Not having given up yet, Wildfire leaves with the rest of the rebel squad to go on more missions for Jabba while Umbra is left in the prison with the other survivors.
Eventually, Umbra and three other survivors were brought into Jabba's audience chamber and chained by the necks. The rebel group then attacked the palace, something the Hutt anticipated. When the squad entered the chamber, Jabba stated that they are just in time to watch their friends die. Jabba then pressed a button on his dais which opened up a trap door and dropped two of the survivors into a pit which housed a rancor. Jabba then fled behind a door, using the other two survivors as shields. The rebel squad split up, some dropped into the pit to fight the rancor and the others pursued Jabba before he could get away. The rebels managed to defeat both the rancor and Jabba, freeing Umbra and the rest of the survivors. They left the palace on a speeder bike and headed towards civilization. On their way there, Umbra thanked Wildfire for coming back despite his repeated insistence on leaving him behind. He told Wildfire that General Plo would have approved, tearing up at the memory of his former commander. Wildfire put a supportive arm around his old squad mate, and together, with the other survivors, they left Tatooine.
Umbra appeared in the Star Wars: Imperial Assault companion app Legends of the Alliance, in the "Jabba's Realm" campaign, in 2019. Umbra has a chance of being one of the eight crash survivors present during the first mission, or guaranteed if the player chooses Wildfire to be in the squad. This article assumes a specific path is taken in the campaign, which can very depending on the choices of the players. This article is written from the perspective of having Wildfire as one of the members in the squad. The dialogue between Umbra and the players differs slightly depending on whether Wildfire is present in the squad or not.
Depending upon the actions and success of the player during the missions, Umbra's fate can vary. Umbra can end up being enslaved by Jabba the Hutt, eaten by a rancor, left behind at Terro's camp, or successfully have escaped Tatooine with the squad. If the players are unsuccessful during the fight when Terro attacks the survivor's camp, then Umbra can end up being one of the survivors taken away on the dropship. If this is the case, then the players don't see Umbra again until later in the story. When the squad attacks the Imperial listening post, Umbra has a chance to be the individual in the bacta tank. If this is the case, then after releasing him from the tank he will explain that Terro took the other survivors to an outpost where he has sheltered and fed them. If a different character is in the bacta tank, then he is at Terro's camp with the other survivors. If the players choose to make a deal with Terro, then he will bring the group to the outpost where they can find the other survivors, including Umbra. If the players instead choose to kill Terro, then they never go to the outpost and Umbra, along with the other survivors, are left behind there.
When the group obtains the code cylinders, they have the option to keep them for the Rebel Alliance and not give them to Jabba. If they choose to keep them for the Alliance, then the group gets picked up by a rebel agent and taken to an outpost. The rebel agents will then rescue the survivors from Jabba's palace, which includes Umbra if he wasn't captured by Terro. Then when the group goes to attack the listening post, Jabba's forces attack the rebel outpost and recapture the survivors.
The finale of the story can end with either the players choosing to storm the palace or trade themselves for the freedom of the survivors. When they trade themselves, the survivors, including Umbra, are freed from their imprisonment. If the player successfully defeat Jabba afterwards, then the rebels meet up with the survivors. When the rebels attack the palace, Umbra has a chance of being one of the four survivors chained in the audience chamber. If Umbra is one of the survivors in the chamber, then he has a chance of either being one of two of the survivors to be dropped into the rancor pit, or one of two of the survivors to be used as a shield by Jabba as he flees. If the players fail to defeat the rancor while Umbra is in the pit, then he is eaten by the rancor. If the players fail to defeat Jabba while Umbra is being used as a shield, the Jabba flees with him and the other survivor and they become enslaved. Umbra also becomes enslaved, along with the rebels and the rest of the survivors, if the players fail to make it to the audience chamber during the attack on the palace.