The final episode of Ahsoka, Season 1 ended with Baylan Skoll making a shocking discovery. Throughout the Star Wars series, the fallen Jedi Baylan Skoll, played by the late Ray Stevenson, has been on a quest for a mysterious higher power. For Baylan, the search for Grand Admiral Thrawn was nothing but a means to an end and Episode 7 confirmed he had no intention of taking a place in Thrawn's resurgent Empire. Fan speculation had proposed characters and creations from all corners of Star Wars lore as the potential objects of Baylan's quest and the finale's ultimate reveal lived up to the highest of fan expectations.
Source:https://www.cbr.com/ahsoka-baylan-skoll-mortis/