In Star Wars: The Clone Wars, Yoda encounters the ancient Sith Lord Darth Bane from the Old Republic. While some argue that this breaks the known canon surrounding Force ghosts, there are explanations for the Sith Lord's appearance beyond death. The power of the dark side is both dangerous and tempting, presenting risks for Sith Lords seeking to prolong their existence after death.
According to Star Wars canon, only Jedi can become one with the Force and retain their individuality as a Force ghost. Sith are unable to achieve this, which is why they strive for immortality, driven by their desire to cling onto their corruptive power. Consequently, there are two possible explanations for Yoda's encounter with Darth Bane's spirit when he visits the ancient Sith world of Moraband in the finale of The Clone Wars season 6.
Yoda May Have Faced An Illusion Of Darth Bane
The answer to Darth Bane appearing before Yoda being largely in Yoda's mind is simplistic and uninteresting. However, it aligns with various aspects of Yoda's Force-guided journey in The Clone Wars. With guidance from the Living Force and Qui-Gon Jinn's ghost, Yoda gained knowledge about the Jedi's ability to become a Force ghost after death. He later passed this knowledge to Obi-Wan Kenobi before their exiles following Revenge of the Sith.
Yoda's journey was profoundly supernatural, taking him to worlds like Dagobah and Moraband, which possess significant connections to both the light and dark side of the Force. During his journey, Yoda faced a physical embodiment of his own fears and darkness, reflecting his inner psyche materialized through the Force. This suggests that Darth Bane's presence could extend beyond a mere illusion or projection designed to test Yoda's determination.
Sith Spirits Can Live On After Death Using Essence Transfer
Darth Bane's appearance in the Clone Wars can be better explained by the fact that he was a genuine Sith spirit bound to Moraband, the ancient Sith world where he likely met his end and was laid to rest in his own tomb. Having established the Sith's Rule of Two during the last days of the Old Republic, Bane was a renowned Sith who probably possessed the knowledge to anchor his spirit to the mortal realm. Similar to other Sith in the Star Wars universe, it was possible to cling to life through dark side rituals.
It is indeed possible for a Sith Lord to transfer their spirit after death, albeit through a cursed existence. They could inhabit another living being or object, like the case of the ancient Sith architect Darth Momin. Momin, unwilling to abandon his dark endeavors unfinished, transferred his spirit into his own mask, which could only be functional if worn by a host he would possess. This occurrence was depicted in Charles Soule's 2017 Darth Vader comic series, illustrated by Giuseppe Camuncoli.
In the Legends of the non-canon series, it was shown that Sith spirits could inhabit geographical locations. This was demonstrated by Exar Kun, who unintentionally bound his spirit to the Massassi temples on Yavin IV for thousands of years. Unlike Jedi Force ghosts, these Sith spirits have limitations and endure cursed existences. If Exar Kun had used the same technique when he died, it would mean that Moraband was the place of Darth Bane's death and his spirit was trapped there until Jedi Master Yoda arrived.
It is logical to assume that Yoda actually encountered Darth Bane during The Clone Wars, rather than facing a projection of his own consciousness or an illusion resembling Bane meant to test him. The appearance of Darth Bane's spirit, voiced by Mark Hamill who portrayed Luke Skywalker, is a significant moment in The Clone Wars. It is more thrilling to believe that Yoda confronted the real Sith Lord. However, this cameo by Darth Bane does not violate the Star Wars canon since he is not a legitimate Force ghost in either scenario.