Before she became a Jedi hunter, she had possession of a droid. However, it was taken away from her, like many of her past belongings and acquaintances. During her time as an Inquisitor, the Third Sister wore black armor with a cape, and wielded a red-bladed Inquisitor lightsaber.
The Third Sister Was a Jedi Youngling
On that infamous day, Reva was training with her fellow Jedi younglings in the Jedi Temple of Coruscant. Together with his clone legion, Anakin Skywalker walked into the temple and killed all its inhabitants.
Reva may never become a Jedi again, but following the Order's code isn't what makes a Force user benevolent.
However, one new character, Moses Ingram's Reva, the Third Sister, has caused many fans to look towards the larger Star Wars canon when watching this show. More specifically, many have drawn connections to the videogame, Star Wars Jedi: Fallen Order.
Seething with ambition, Reva hunts down Jedi survivors of Order 66 as an Inquisitor. She wears the sleek armor of the secret order, and brandishes a unique lightsaber that can split in two to maximize her lethality.
Vernestra was enough of a prodigy that she eventually attained the rank of Jedi Knight at the age of only fifteen, making her the youngest Knight in a generation.
Reva is NOT the daughter of Mace Windu.
Just because she is black and was a Jedi Youngling, it does not mean she was his daughter.
The Third Sister made an attempt on the Dark Lord's life but was outmatched and left for dead by him and the much-alive Grand Inquisitor.
She's had to do all this and become a Sith, and by the end of “Part V”, she is impaled by Vader, who leaves her for dead. And Vader reveals that he's been aware of Reva's deception the whole time.
She either saw Anakin kill her fellow Jedi or saw the recording of his crimes. That's why she has such hatred for Obi-Wan. She was a Padawan who escaped Order 66. But Reva survived the massacre only to see her and her friends hunted.
Reva knows that Anakin Skywalker is Darth Vader because she was one of his targets—a child—during the Order 66 killings that took place during the events of Star Wars Episode III: Revenge of the Sith.
Reva then confirmed Obi-Wan's assertions and admitted to her plans to betray Darth Vader. So while Reva is still a Star Wars villain, it's not known that she was never really on the Empire's side. She was simply pursuing Obi-Wan to serve her own interests.
In the denouement of the episode, after Darth Vader accuses Reva of failure, she reveals that she actually wanted Obi-Wan and Leia to escape. Reva let them go on purpose, and at this moment, Vader and Leia both learn valuable lessons.
Reva seeks to capture Obi-Wan Kenobi as a show of loyalty and effectiveness to Darth Vader. She knows who Vader once was and understands his relationship with his former Master. She pursues Obi-Wan with a level of dogged determination that may be better described as an obsession.
Designers decided that the semi-circle version would telescope out to create the full circle. Moses Ingram, the actor who played the Third Sister, received the lightsaber as a gift from Lucasfilm president Kathleen Kennedy.
Fifth Brother is revealed to have once been a Jedi in the Marvel Comics series Darth Vader: Dark Lord of the Sith, which takes place between the events of Revenge of the Sith and Star Wars Rebels.
Reva is also established as ruthless from one of her first scenes in the series, where she attempts to slaughter a Jedi despite the Grand Inquisitor's plan to interrogate him.
An interesting fact I learned from crew members is she is named after Revan from Knights of the Old Republic. The concept is Reva is the feminine version of Revan.
She's too angry to die though and seemingly figured out that 10-year-old Luke Skywalker (Grant Feely) is Vader's secret son and living in hiding on Tatooine. Obi-Wan sensed the danger to Luke through the Force, so I guess he'll have to get back to the desert world to confront Reva.
As an adult, after becoming an Inquisitor, Reva was highly ambitious. She was set on tracking down Jedi Master Obi-Wan Kenobi, with her fellow Inquisitors assuming she hoped his capture would gain her Darth Vader's favor and therefore improve her station.
Obi Wan Kenobi introduces audiences to four Inquisitors, the Grand Inquisitor and the Fifth Brother, the Fourth Sis and the Third Sister Reva. They receive a significant amount of screen time, and constantly fight one another, actively working against their goal of capturing Kenobi.
On Tatooine, the droids are captured and sold to Luke Skywalker's uncle. As Luke is cleaning R2-D2, he accidentally triggers part of the message from Princess Leia, which plays on repeat. "Help me, Obi-Wan Kenobi," she says, "you're my only hope."
Billaba became Windu's Padawan and trained under the Jedi Master in the ways of the Force. During her training, Windu allowed her to study Form VII variant known as Vaapad. She eventually became a Jedi Knight, renowned for her skills with a lightsaber and favored Form III when teaching other Jedi.
The Fourth Sister was once a Jedi Knight, but during the Rise of the Empire and after Order 66 was issued, she fell to the dark side and joined the Empire. She then joined Darth Vader's Inquisitorius organization which were made of Jedi who turn to the dark side and intend to hunt down any Jedi who survived Order 66.