- "Did you know that Sith Lords could sometimes drain the Force energy from their captives? Siphoning life from them and using it to strengthen their connection to the dark side? Extending their own lives, as well, so that they could live for centuries beyond their intended expiration?"
- ―Yupe Tashu to Wedge Antilles
According to Yupe Tashu, ancient Sith Lords could drain the Force energy from other individuals. By siphoning life from others, the Sith could both strengthen their connection to the dark side of the Force and extend their own lives. Similarly, the queen of Ktath'atn could "feed" on others. Talzin spirit was able to emerge from a stone monolith to directly possess Dooku, draining his life energy, and regaining her physical form. During the Clone Wars on the Mission to Mortis, Anakin Skywalker used this ability with the Daughter, who was dying, to transfer the remainder of her life force to revive a deceased Ahsoka Tano.
- Star Wars: The Clone Wars – "Altar of Mortis" (First appearance)
- Darth Maul—Son of Dathomir, Part Four