The Inquisitors have appeared across the Star Wars franchise, featuring in the likes of Star Wars Rebels, several books, and the Jedi Fallen Order video game.
The Inquisitors were all former Jedi that fell to the dark side either by torture or corruption and would provide much conflict and drama should they be introduced into the Obi-Wan Kenobi series.
While this remains a rumor for now, their inclusion would certainly fit into Obi-Wan Kenobi.
Filming on Obi-Wan Kenobi has finally begun, and it sounds like Obi-Wan will have a lot to contend with when he eventually makes his mark on Disney Plus.