Yes, I'm aware the Ebony Warrior exists solely as a metatextual joke in Skyrim. He's the character that has achieved level 83, done all the quests, and is bored with the game now. He's supposed to represent the time when the player can start over with a new character or leave the game. He's not actually a character IN the setting so much as a final bit of fanservice and challenge for super-high level PCs.
BE THAT AS IT MAY.
Would anyone be interested in him getting a history in future games? Like, say, a book called "The Ebony Warrior."?
One which explains who the hell he was?
What would be his past, in your opinion?
What has he done and accomplished?