Tahiri was born on the planet Tatooine. Like many of the planet's other settlers, her parents Cassa and Tryst Veila had a moisture farm where she spent her early years. She was orphaned at the age of three during a Tusken Raider raid though she was adopted by the tribe's leader Sliven in return for the kindness shown to him by her parents. Tahiri was raised as a Tusken Raider and had a pet bantha named Bangor. She was skilled in the Force and was later found by Jedi Master Tionne and brought to Luke Skywalker's Jedi Praxeum on Yavin 4 at about nine standard years old in 22 ABY.
There she met the youngest of the Solo children, Anakin, and they quickly became close friends. Around the Academy, Tahiri refused to wear shoes and would go everywhere barefoot because she liked the coolness of the floors in contrast to Tatooine's hot sands.
On one adventure with Anakin, they came across the crumbling Palace of the Woolamander and discovered the Golden Globe and the ancient Kushiban Jedi Master Ikrit. Later, Ikrit also informed the pair that the Golden Globe contained countless trapped souls and that he had tried to break it before and failed.
Following that, Tahiri and Anakin accompanied the Melodie Lyric to her homeworld of Yavin 8 where she was to undergo an important form-changing ritual known as the Changing Ceremony. Shortly after the trio's arrival, they fell under attack by several native predators including an avril, a reel , several raiths and a purella. However, Anakin fought and killed them all. During the journey, the pair also discovered ancient carvings deep within the a cave on the moon which matched those found at the Palace of the Woolamander. From these carvings, they learnt that Golden Globe contained the souls of the children of the Massassi that had been imprisoned by the Dark Lord Exar Kun in 3,997 BBY. They also learnt that it was held together by Sith magic that could only be broken by Force-sensitive children.
However, before Tahiri and Anakin could do so, Sliven demanded that she return to Tatooine. Tahiri was accompanied by Anakin to Tatooine where she rejoined her people and discovered that her real parents were Tryst and Cassa Veila, also Force-sensitive like their daughter though they had been accidentally killed in a Sandpeople raid. The two young Jedi also had to use their Force abilities as never before including surviving the harshest deserts of the Dune Sea, evading a sarlacc, befriending a Jawa clan and defeating a Krayt dragon. Following this ordeal, they returned to Yavin 4 and freed the trapped souls within the Golden Globe.
Despite this, her friend Anakin remained troubled by visions of himself as a Dark Jedi, by his heritage as the grandson of Anakin Skywalker, who had become the infamous Darth Vader. Also, the reborn Emperor Palpatine had once attempted to enter him as an infant. To ensure he had no potential for evil, the young Jedi asked if he could go to the very same cave on Dagobah that Luke Skywalker had gone years earlier, and face himself.
However, before arrangements for the trip could be made, a youth named Uldir Lochett was found stowed away on one of the supply ships to the Praxeum Lightning Rod. In spite of his optimism, he lacked obvious Force sensitivity—in his own later, rueful opinion, all he had were good hunches, a whisper-like ability to sense when the Force was being used, and a habit of causing trouble. Later, Tahiri, Ikrit and R2-D2 accompanied Anakin to Dagobah. There, they discovered that Uldir had stowed away on their transport and encountered several swamp creatures before finally reaching the cave where Skywalker had faced his own dark side years earlier. There, Anakin faced the manifestations of his own doubts though he emerged victorious in the end.
Later that year, the Jedi historian Tionne Solusar discovered that Darth Vader had saved Obi-Wan Kenobi's lightsaber after their duel on the Death Star I in 0 BBY and kept the captured artifact at Bast Castle on Vjun. Since an information broker had sold this information to them, she feared that others may have gotten to it first and quickly informed Master Luke Skywalker who administrated the Jedi Praxeum. Thinking it was just a simple trip and time for training, Tionne allowed Uldir, Anakin, Tahiri Veila and Ikrit to accompany her to Vjun on her personal transport Lore Seeker.
Having arrived on Vjun, they discovered another vessel and feared another group had reached it first. Having survived Bast Castle's automated defense systems and booby traps, they discovered the lightsaber in display in a protected alcove. Unfortunately, a group of mercenaries and pirates under a cloaked man named Orloc arrived. Orloc claimed to be a mage who possessed great powers and his henchmen also stole Kenobi's lightsaber.
In response, the Jedi pursued Orloc and his henchmen on a chase through Bast Castle. During a confrontation, Orloc easily defeated Ikrit in lightsaber combat since the Kushiban had no lightsaber at all. He also deceived Uldir by claiming to train him all the Force skills he desired. However, the other Jedi managed to rescue Uldir and escape Bast Castle, along with Kenobi's lightsaber and the holocron of the ancient Jedi Master Asli Krimsan.
Despite having escaped Orloc, Uldir was now obsessed with what the Mage had told him and still believed that the Mage would be able to awaken the Force powers within him, which nobody at the Jedi Praxeum on Yavin 4 had been able to do so. Uldir then stole Ikrit's ship Sunrider (named after Nomi Sunrider) and the two Jedi artefacts recovered during the previous adventure at Bast Castle.
Uldir eventually found Orloc at an abandoned space station called Exis Station, where Tionne had met Luke years earlier in her search for relics. Having arrived at the derelict space city, Uldir found Orloc whom took the youth as his student. The Mage had already set up his base on the moon and planned to create his own Jedi Order. In reality, Orloc had no Force powers but had actually used high-tech gimmicks to deceive others with demonstrations of so called "Force power". Uldir did not realise it.
Tionne, Ikrit, Anakin and Tahiri set out to find Uldir on their transport Lore Seeker and eventually found Exis Station. Having arrived, they tried to tell Uldir that Orloc was a fraud and that he had been deceived. The Mage attacked the four Jedi with his high-tech gimmicks, who fought back by using the Force.
During the duel, Tionne was wounded and Ikrit—who had sworn not to wield a lightsaber until he had found worthy students—made his decision and join Anakin and Tahiri in their fight. Uldir then saw that Orloc was little more than a charlatan whom use technology to deceive others with demonstrations of power. Together, the Jedi defeated Orloc, thus removing a threat to the growing New Jedi Order. Tahiri and her companions would return to the Jedi Praxeum. Whenever Tionne was not teaching classes, Tahiri had her full attention.
- "No? I'm not sure. Sometimes I don't know who I am anymore."
"I do. You aren't the same as you were before the Yuuzhan Vong captured you. Neither am I. But you're still Tahiri."
- ―Tahiri Veila and Anakin Solo
During the Yuuzhan Vong War, the Jedi Praxeum was targeted for destruction by the extragalactic Yuuzhan Vong. When the Yuuzhan Vong attacked in 26 ABY, Tahiri had just turned fourteen standard years. Shortly after the Battle of Duro, Anakin came to Yavin IV to warn of an attack, only to find the Peace Brigade had started an invasion. During the Yuuzhan Vong assault, she stayed at the Academy while the others went to fight. However, Ikrit was killed and Tahiri was captured. Once the Vong had taken over the planet, they began to shape the area, which included Tahiri. Master Shaper Mezhan Kwaad and her assistant Nen Yim performed heretical acts and shaped Tahiri to be closer to Yuuzhan Vong, creating a new personality called Riina Kwaad. She became fluent in the language and desired to fight for their side. Her shaping was almost complete when Anakin interfered. Tahiri ended up killing Mezhan Kwaad and the two escaped to Coruscant.
Tahiri became an asset in the war and the Jedi's understanding of the Vong because of her shaping, she was also one of the few fluent in their tongue.
On Tahiri's next adventure, she, Anakin and Corran Horn travelled to Eriadu. She and Anakin came to the aid of the Rodian Jedi Kelbis Nu who was being attacked by a group of Peace Brigade agents. Kelbis told them that the Yuuzhan Vong would target Yag'Dhul next since it was located on where the Corellian Trade Spine and the Rimma Trade Route met.
Unfortunately for them, they were arrested by the Eriduan judicials under a Human male named Lieutenant Themion. During their incarceration, he had them kept in separate cells and then interrogated each one of them. When interrogating Anakin, he assaulted the young Jedi after Anakin refused to cooperate with him. This angered Tahiri whom sensed this through the Force. She then used her Force powers to break out of her cell before proceeding to storm Anakin's cell.
With a blaster in one hand and under the influence of the Riina Kwaad personality, Tahiri shouted Do-ro'ik vong pratte before hurling Themion against the wall. Tahiri then handcuffed him with his own stun cuffs. Another guard entered the cell though Anakin threw him against the corridor wall as well, knocking him out and giving the two Jedi enough time to escape and reclaim their lightsabers.
This involved fighting through more judicials outside the prison and hijacking a police speeder though the two Jedi eventually reached the spaceport and escaped off-world with Corran Horn on their tranport Lucre. During the journey to Yag'Dhul, the three Jedi swapped the Lucre for a stolen Yuuzhan Vong Yorik Stronha (spy ship-analogue) which was christened Stalking Moon. Having arrived at Yag'Dhul, they succeeded in warning the native mathematical Givin of the impeding invasion of their planet. Because of the threat, the Givin decompressed the space station to kill the Vong, which forced Tahiri and Anakin into a storage locker. Feeling the end was near, the two shared their first kiss, completing the development of their friendship into something more. They were later rescued by Corran while the combined Givin/New Republic fleet drove back the extragalactic ivaders.
One of the most important of Tahiri's mission is the one she went on with other Jedi Knights to Myrkr to destroy the Voxyn queen. Here she was faced with seeing her love, Anakin killed. She was devastated and fell into a deep depression.
Yet her greatest trial with the Yuuzhan Vong was not to be on the outside, but from within. When Han and Leia Organa Solo took her and Jaina Solo with them to reestablish communications with regions of the Galaxy the Galactic Alliance had lost contact with, the Riina personality began to resurface. The mental turmoil caused Tahiri to enter a catatonic state, where the two personalities battled for control. Eventually, both personalities realized that the only way for both to survive was to merge together, essentially creating a new person. However, her loyalty was still to the Galactic Alliance.
Following this, Tahiri teamed up with Corran Horn in extracting Nen Yim, the priest Harrar and the prophet Yu'Shaa from Coruscant and bringing them to Zonama Sekot. She also partipated in the recapture of Coruscant at the end of the war, having mastered the Vongsense and using it to the benefit of the Galactic Alliance.
- "I'm still part Yuuzhan Vong, the only thing pain would cause me is a religous experience."
- ―Tahiri Veila
After reclaiming Coruscant and once the Yuuzhan Vong had been relocated to the living world Zonama Sekot, Tahiri decided on staying on the planet to help the Vong adjust to their new home. However, while attempting to meditate a conflict between Workers and Warriors, she received a strange urge to go the Unknown Regions.
Later, it would be learnt that Tahiri had met the hive-minded Killik species and become a "Joiner"—someone who was influenced and was subject to the control of the Killik Will by pheromones that actually "change the make up of the brain." She was not alone since other Jedi Knights including Alema Rar, Jaina Solo, Zekk, Lowbacca and Tesar Sebatyne—all of them survivors of the mission to Myrkr—had joined the Killiks, thus becoming Joiners as well.
After deeming her a threat to Jedi security during the closing months of the Killik conflict, Luke Skywalker sent Tahiri along with Tesar Sebatyne and Lowbacca to Dagobah in order to meditate on what it meant to be a Jedi. Luke told them that he would call them once he felt they were ready to rejoin the order, and that they were not to leave until they felt that call. He would later learn that she had really been spying on Tesar and Lowbacca on Jacen Solo's behalf.
- The Golden Globe (First appearance)
- Lyric's World
- Anakin's Quest
- Vader's Fortress
- Kenobi's Blade
- Crisis at Crystal Reef
- Edge of Victory I: Conquest
- Edge of Victory II: Rebirth
- Star by Star
- Dark Journey
- Enemy Lines I: Rebel Dream
- Enemy Lines II: Rebel Stand
- Destiny's Way
- Force Heretic I: Remnant
- Force Heretic II: Refugee
- Or Die Trying
- Force Heretic III: Reunion
- The Final Prophecy
- The Unifying Force
- Dark Nest I: The Joiner King
- Dark Nest II: The Unseen Queen
- Dark Nest III: The Swarm War
- The Essential Chronology
- The New Essential Chronology
- The New Essential Guide to Characters
- The New Jedi Order Sourcebook
- Who's Who in the New Jedi Order
- The Official Star Wars Fact File issue 135
- Barefoot Jeedai: A Tahiri shrine