In 22 BBY, Barriss Offee accompanied her master Luminara Unduli to Ilum to construct her lightsaber. Offee used it to defend herself from the droids planting explosives in an attempt to destroy the temple. After being buried in, the pair had then been saved by Grand Master Yoda.
Offee used her lightsaber throughout the rest of the war until her fall to the dark side of the Force in 20 BBY, when she bombed the temple, killing workers, clones, and framed her friend, Padawan Ahsoka Tano for the crime. When Anakin Skywalker came to her quarters, he took the lightsaber as he "casually" engaged Offee in inquisitive conversation before activating it and lashing at her. She was forced to defend herself using the lightsabers she'd stolen from Asajj Ventress, giving herself away. The two engaged in an intense duel, Skywalker using Offee's own lightsaber along with his own weapon against her. During the fight, Offee leaped from a ledge to attack Skywalker, the force of her attack knocking her former weapon out of Anakin's hand. It was last seen lying on the ground as Offee was disarmed and arrested.
- Star Wars: Clone Wars – "Chapter 14" (First appearance)
- Star Wars: Clone Wars – "Chapter 16"
- Star Wars: The Clone Wars – "Weapons Factory"
- Star Wars: The Clone Wars – "Legacy of Terror"
- Star Wars: The Clone Wars – "Brain Invaders"
- Star Wars: The Clone Wars – "Grievous Intrigue"
- Star Wars: The Clone Wars – "The Wrong Jedi"
- LEGO Star Wars III: The Clone Wars (Non-canonical appearance)
- Star Wars Insider 115 collector's edition cover
- The Essential Reader's Companion (Picture only)
- Star Wars: Force Collection (Card: Barriss Offee (★★★)) (Picture only)
- LEGO Star Wars: The Dark Side (Non-canonical source)