As Disney Plus' Ahsoka series wraps up another episode, many Star Wars fans are still frantically trying to piece together the origin of the mysterious Dark Jedi Baylan Skoll. So far, all the show has revealed is that he was a Jedi General during the Clone Wars and went missing after the Sith Lord Darth Sidious executed the infamous Order 66 that incited the Great Jedi Purge. Since then, Baylon's activities are largely unknown, as he drifted across the Galaxy for over thirty years before returning to prominence in the Ahsoka series alongside his new apprentice Shin Hati and the Imperial Inquisitor Marrok.
Source:https://www.cbr.com/ahsoka-connection-dark-jedi-baylan-plo-koon-star-wars-fan-theory/