Suunfuus came to live on the volcanic planet Brazadann where he sought to improve the lives of his fellow men. He offered up part of his crystal to Oriadann, the twin planet of Brazadann, to be used as an energy source. Unfortunately, the power of the crystal was poorly controlled and all its energy was released at once, completely destroying Oriadann. Consumed with guilt, Suunfuus locked away the other part of the crystal in a crypt and searched for redemption at the sacred and mystical Great Worms Cemetery. It was there that he would enter the bowels of a deceased lava worm as a way of purifying himself.
He remained inside the worm until a group of Rebels found him. They informed him that Daymon Thorn was after his Korendum and planned to use it as a weapon. Willing to help them, they left the cemetery and were about to make their way back to the City but were ambushed by the Salamander Warriors who challenged them to a competition called the Dance of the Worm. After the Rebels won, the group returned to Brazadann City in the midst of an assault by Daymon Thorn. The group made their way to the crypt where Suunfuus had locked the Korendum away. He opened it and placed an anti Korendum in contact with the crystal to dissipate its energy. The Rebels the proceeded to defend the crystal from Daymon Thorn and his forces while Suunfuus took cover. The Rebels managed to defeat Thorn and protect the crystal, allowing the dissipation process to complete.
While traveling through space, the Ithorian scientist Brother Suunfuus' ship was captured by the Gorgorror. The Gorgorror was a gigantic, biotechnological ship that wandered the galaxy, capturing ships in order to obtain essential raw materials to sustain itself. Suunfuus was not the first to be trapped inside the ancient ship, and he lived among others who came to be known as the Mécateks. He eventually became acquainted with the adventurer Yele l'Ecumeuse, the Force disciple Daymon Thorn, and his Jedi Master Lyoon. The four joined their efforts to brave the dangers of the ship and escape, however only Suunfuus, Yele, and Daymon would be successful. During their escape, they discovered crystals known as Korendums. They made their way to the heart of the ship, where they discovered an entity that they convinced to build them a ship so they could escape. They each took one crystal with them before successfully escaping the Gorgorror. The three survivors then scattered across the galaxy with Suunfuus settling on the volcanic planet of Brazadann.
By the time of the Galactic Civil War, at some point during or after 0 ABY, rumors of the Gorgorror had spread across the galaxy. While on a mission to aid Yele l'Ecumeuse with an uprising on the planet Taypho, a group of Rebels heard a rumor from an individual who claimed to have met an Ithorian who lived inside the legendary ghost ship.
Living in Brazadann City, Suunfuus became an important figure on the planet. He acted as a scientific advisor, improved the smelters' production techniques for quality metals, and embraced a religious career. He sought to further improve the lives of his fellow men and offered part of his Korendum to Oriadann, the twin planet of Brazadann. The crystal was to be used as an energy source for the planet, but the tremendous power of the artifact was poorly controlled. All its energy was released at once, resulting in the complete destruction of the planet. Consumed with grief, Brother Suunfuus had the rest of the crystal sealed in an underground crypt that only he could open, then left for the Great Worms Cemetery. The cemetery was one of the most mystical places on the planet, and it was there that he searched for redemption. It was believed an individual was purified when they ventured into the bowels of one of the deceased lava worm's. The worms had three segments, the entrance isthmus, the primary rings, and the secondary rings. While most were content with meditating in the isthmus, Brother Suunfuus had hoped to reach the secondary rings. No one had seen him since.
News of Oriadann's destruction had spread across the galaxy, causing panic with everyone assuming it was the Galactic Empire's doing just as they had done with Alderaan. The news made its way to Taypho where Yele l'Ecumeuse and the Rebel group learn about the tragedy. Realizing this was the work of Brother Suunfuus, Yele revealed to the Rebels the origin of the Korendums and Brother Suunfuus' research on Brazadann and Oriadann. Having just gotten her crystal stolen by Daymon Thorn, now working for the Empire, Yele informs the Rebels that they must find the last Korendum befor he does. So the Rebels set a course for Brazadann to find Suunfuus and his Korendum.
While on their way to Brazadann, the Rebels encountered and were captured by the Gorgorror. Aboard the ghost ship, the group meets the Mécateks and are inducted into their society. When the Rebels asked what lied beyond the hull, they were told that no one who enters ever comes back which included four strangers who seemed sure of themselves. The group journeys into the ship where they eventually come across the ghost of Lyoon, Daymon Thorn's master. The ghost informs the Rebels that Daymon fell to the dark side and killed him. He also speculated that Daymon, along with Suunfuus and Yele, traveled to the heart of the ship, where Lyoon sensed an all-powerful entity, and used his newly aquirred dark side powers to convince the entity to help them escape. Before leaving the ghost, the Jedi Master bestows upon them an anti Korendum which can dissipate a Korendum's energy. When the Rebels make it to the heart of the ship, they are attacked with disturbing visions of the three escapees. After overcoming the visions, the entity allowed the Rebels to leave after they promised to find and kill Daymon Thorn, the one who deceived it.
After their ordeal in the Gorgorror, the Rebels finally made it to Brazadann. Daymon Thorn already made contact with the local Brazanites who remained loyal to Brother Suunfuus and refused to hand him over. Upon their arrival at Brazadann City, the Rebels are welcomed and a guide took a group of them across the lava sea, on a sled pulled by lava worms, to the Great Worms Cemetery. At the cemetery, they entered the carcass of the lava worm where Suunfuus was last seen, and eventually found him, thin and pale, in the secondary rings. With his redemption complete, the group informed him of their situation as they helped him leave the worm. Learning about Daymon Thorn's plan to steal his Korendum to use as a weapon, Suunfuus was willing to do anything to help the Rebels. As they left the valley of the cemetery, the group was ambushed by members of the Salamander Warriors tribe and challenged to compete in the Dance of the Worm. After their victory against the Salamander Warriors, they boarded their worm-pulled sled and returned to Brazadann City.
With the city under attack by Thorn's forces, Suunfuus and the Rebels flee to the Great Forge, an underground magma lake and the location of the well leading to the crypt that housed Suunfuus' Korendum. Suunfuus opened the crypt and is given the anti Korendum that the Rebels received from the Jedi Master. He placed the anti Korendum in contact with the crystal and it began to discharge. They had not won yet, as the dissipation of all the Korendum's energy would take over two hours. Suunfuus advised to not move the crystal, as that risked it falling into the lava and causing a chain reaction. With Thorn closing in on their location, the Rebels set up a defense to protect the crystal. When Thorn arrived, Suunfuus took cover as the Rebels fought the Imperial forces. As geysers erupt on the battlefield, the Rebels defended the crystal from Thorn and manage to defeat him and his soldiers. With the Imperials gone, they successfully dissipated all the energy from Suunfuus' Korendum.