"I still sense the Jedi and his Padawan, within my grasp."
―The Grand Inquisitor
Born prior to 47 BBY, the future Grand Inquisitor was a Jedi Knight. As a Jedi Knight, he served at the Jedi Temple on Coruscant. He wore nice, golden and white armor with a amazing yellow Lightsaber.
He was one of the guards that was included with The Trial Of Ahsoka Tano. A trial of The Bombing At The Jedi Temple.
Barriss Offee, a padawan at the Jedi Temple. She was the one who did the bombing at The Jedi Temple, but framed her friend, Ahsoka Tano. She was expelled from The Jedi Temple. The future Grand Inquisitor was one of the guardsmen who led Ahsoka Tano from the Jedi Temple.
They eventually learned that it wad Offee who had caused the bombing and then she was led to her trial, by the future Inquisitor. Ahsoka was offered to come back but she refused.
"The events with Offee and Tano left the future Grand Inquisitor feeling disaffected, and he lost faith in the Jedi Order."
―The Grand Inquisitor Star Wars Fandom Page
By the end of Order 66, he had survived. The Pau'an male was offered to be an Inquisitor by The Chancellor. He took the deal. That's when his life changed, forever.
The Grand Inquisitor was tasked with hunting down all Jedi still alive after Order 66. He did track down many Jedi on his journeys, one of them being Luminara Unduli. She later died while The Grand Inquisitor was watching
One of his bigger enemies was Ezra Bridger and Kanan Jarrus. While he had a ruff battle with them, he fell a long ways. Leading to his death
*This is not his whole history, just some big plot points I wanted to talk about*
-Exoticdune