The Non-Canon Expert looks at why Jedi Master Obi-Wan Kenobi attempted to warn and even protect Darth Vader at the end of their duel on Mustafar in Episode 3: Revenge of the Sith, even knowing that his former friend and apprentice Anakin Skywalker had joined the Sith Order and the dark side of the Force. This is a Legends story for Jedi Master Obi-Wan Kenobi and Darth Vader with information found within «Star Wars: The Life and Legend of Obi-Wan Kenobi,» «Star Wars: The Clone Wars: Wild Space,» and the Episode 3: Revenge of the Sith novelization.