Dark Empire Audio-Drama - Palpatine mind-wipes and enslaves Luke Skywalker
So, I was just skipping around, but it appears in the audio-drama that Palpatine does to Luke similar to what the Jedi Council did to Revan.
I think he basically mind-wiped Luke, pushed his former memories deep into his mind, and then telepathically made him into his servant.
https://www.youtube.com/watch?v=3_TzzT9nfqY&t=2h21m00s
Sound: Luke's lightsaber activates.
LUKE: (hate-filled voice) Yes, my master.
EMPEROR: Bring your sister over to the Dark Side. You have the power.
LEIA: (waving her lightsaber in defense) I don't know what he's done to you, Luke, but this time we're REALLY leaving.
LUKE: Leia, put the lightsaber away. I don't want to hurt you.
LEIA: The last thing I'D do is hurt you, Luke. What's happened to you is NOT final!
EMPEROR: (laughs) He cannot hear you, child! To him, you are a ghost! A faint memory of a former life!!
LEIA: Luke.....listen!! (shuts off lightsaber) Luke.....? (near crying) Oh, what have you DONE? What's behind his vacant stare??
EMPEROR: Why, nothing, my child. NOTHING.
Sound: We now hear from Luke's POV. The dialogue is all but buried under the whispers of the Dark Side, now deafening and overlapping.
WHISPERS: (the voice of the Emperor) Nothing....you are nothing......
LUKE: (echoing whisper) Where am I?
WHISPERS: Alone.
LUKE: (echoing whisper) No.....help me......
WHISPERS: There is no one. There is only the Dark Side.
LUKE: I...am....a Jedi.....(moans in pain)
WHISPERS: You are NOT a Jedi. You are nothing. You have no name.
LUKE: My name......is......Skywalker......(cries out in near- silent agony)
WHISPERS: You.....have......NO.....name!!!
LUKE: I.......
WHISPERS: Accept the Dark Side. You have no name.
LUKE: (losing to despair) I.....have.....no.....name.......
WHISPERS: You serve the Dark Side.
LUKE: I sss.....
WHISPERS: Listen to the voices.
LUKE: The voices......
WHISPERS: .....of the Dark Side.
LUKE: (dark voice again) Yes.
WHISPERS: The one law is fear. The one fear is power. The one power is hate.
LUKE: Hate......
LEIA: (echoing, as if from a far distance) Luke......
WHISPERS: Hate....
LEIA: (using the Force to "amplify" her voice) Luke.....clear your mind.......
LUKE: Leia.....?
WHISPERS: The one law is fear.....the one fear is power.....the one---
LEIA: Luke, I'm your sister. I NEED you.
LUKE: My sister......
WHISPERS: You are alone.
LEIA: Luke, listen to my voice. My child....will be a very great Jedi. Because YOU will train him. You will train ALL my children in the ways of the Force.
Sound: The whispers seem to be losing power....
WHISPERS: Do not listen!!
LUKE: Leia.....the Force......I am not alone!!! I AM NEVER ALONE!!!!!
Sound: The whispers suddenly STOP.
EMPEROR: (shocked) NO!! This can't be!! NO ONE returns from the Dark Side!! You're mine....