This is a fan casting story for what I think will happen in the upcoming Ahsoka series.
Five years have passed since the fall of The Galactic Empire. The New Republic has chased Imperial remnants to the farthest reaches of the galaxy, with many high-ranking Imperial Officers, including Admiral Gallius Rax, having been killed. However, the potential threat of Grand Admiral Thrawn still remains. Because of this, Ahsoka Tano goes on a mission with the Mandalorian Sabine Wren and The Ghost Crew to find Thrawn and the missing Jedi Knight, Ezra Bridger, while Ahsoka also takes on the responsibility of training a Light Side Apprentice of her own.
Having once been an undercover Inquisitor and a secret Sith Apprentice to Darth Vader himself, Galen Marek, once known only as "Starkiller", betrayed his Master years earlier and now joins his new Master, Ahsoka Tano, and The Ghost Crew in the search for Thrawn, seeing this as an opportunity to redeem himself in the eyes of The New Republic, who currently don't fully believe he has been redeemed after all the things he did as the Apprentice of Lord Vader.
