At the end of Star Wars Episode VI: Return of the Jedi, Luke comes very close to turning to the Dark Side. If he had killed Darth Vader and became Darth Sidious's apprentice, what would his Sith name have been?
Is there any canon information that suggests what it would have been? Or is this something George Lucas has given an answer to in an interview?
Luke briefly joined the Dark Side in the comic Dark Empire. He also pledged himself to the Sith Assassin Galen Marek in a non-canon DLC to The Force Unleashed. He does not receive a Sith title in either case.
I don't have the exact quote, but he apparently sarcastically expresses fear of becoming Darth Starkiller in the Legends novel Outcast. Ironically, had Darth Vader raised him, this likely would have been his title, as Vader assigned it to his secret apprentice as a code name.
Unfortunately, nothing else appears to be known about the matter.
