Warning: Spoilers for Obi-Wan Kenobi episode 5.
The Grand Inquisitor’s survival is confirmed in Obi-Wan Kenobi episode 5, and its explanation is the same as Maul’s return in Star Wars: The Clone Wars. Kenobi began with a bit of controversy among Star Wars Rebels fans when its second episode ended with the Grand Inquisitor being impaled and seemingly killed by Reva (the Third Sister). The unnamed Pau'an endured what would have been fatal lightsaber impalement, and while this preserves his Rebels story, it also raises additional questions regarding the franchise’s dark side users.
While the Legends-era Dark Empire comics featured the resurrections of Emperor Palpatine, the first major Star Wars villain in the canon universe to return from the dead is Darth Maul. Unlike his Legends counterpart, canon’s Maul used the power of his hatred and desire to enact revenge on Obi-Wan Kenobi to survive his bisection. The canon version of Palpatine would return as well in Star Wars: The Rise of Skywalker, transferring his consciousness into a cloned body, similar to his Legends-era counterpart.
Related: Star Wars: Should Darth Maul Have Stayed Dead?
The Grand Inquisitor appears at the end of the Obi-Wan Kenobi episode “Part V,” taunting the Third Sister following her own impalement by Darth Vader. As he reclaims his title, the Grand Inquisitor notes that revenge “does wonders for the will to live,” all but confirming that he survived via a similar method to Maul, using his desire for vengeance to overcome a fatal wound. What’s odd about his method is that Maul managed the feat as a former Sith Lord, while Inquisitors are limited in their training and strength. Moreover, the Grand Inquisitor and Darth Vader put Reva in the former’s same
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