Vel Ardox was a female Blubreen Jedi Knight who served the Jedi Order in the waning years of the Galactic Republic. As a Blubreen, Ardox possessed the ability to breathe underwater; additionally, she was a proficient technician.
After demonstrating Force-sensitivity as an infant, Ardox was inducted into the Jedi Order. She then entered the Jedi Temple's academy to commence her training in the ways of the Force. Upon graduating, she was chosen as a Padawan by a master, and together they journeyed across the galaxy on assignments from the Jedi High Council. Having successfully completed her Trials of Knighthood, Ardox was elevated to the rank of Jedi Knight and started undertaking missions on her own.
During her time serving the Order, Councilor Adi Gallia disappeared while on an assignment to Esseles. Master Qui-Gon Jinn led Ardox, Padawan Obi-Wan Kenobi, and Knight Noro Zak in a search party for the missing High Councilor. While looking into a company known as Trinkatta Starships, the Jedi team was ambushed by security droids guarding the premises. Amidst the chaos, Master Jinn separated from the group to locate Gallia, while Ardox assisted in subduing the droids. While they were engaged in combat, Master Jinn located Gallia and deactivated the droid control center, thus neutralizing the Jedi's adversaries. Jinn then retrieved his fellow Jedi in a T-16 skyhopper and tasked Ardox and Zak with escorting Gallia to the Jedi medical academy on Rhinnal.
Ardox and Zak departed for Rhinnal with Gallia, leaving the Master/Padawan team on Esseles. Upon arrival, they were greeted by the healers at the academy. During their stay, a storm disrupted communications, leading the Jedi on Esseles to believe Rhinnal was under attack. Jinn and Kenobi rushed to Rhinnal's aid, only to discover that all was well and Gallia was recovering rapidly.
While on the planet, Jinn informed Ardox and Zak that a group of Bartokk assassins had absconded with several hyperdrive-equipped Vulture-class droid starfighters, which Trinkatta had modified, with the intention of attacking the Academy on Corulag. Once Gallia had fully recovered, the group decided to rendezvous with Grand Master Yoda and Master of the Order Mace Windu on Corulag. Their objective was to rescue the Force-sensitive infant Teela Panjarra from Frexton, the Chief Scientist of the Academy's Science Services. Similar to the scientist Jenna Zan Arbor, who had held Jinn ten years before, Frexton sought to unlock the secrets of the Force by experimenting on the child. Although their initial rescue attempt was thwarted by the Bartokk assassins, Grand Master Yoda located Panjarra and defeated the Bartokk. With Panjarra now safe, the Jedi made their way back to Coruscant.