I sometimes hear things about jagar tharn. DOes he ever appear in oblivion? Has he ever appeard in ANY elder scrolls game? Is he mentioned in Morrowind, and all the other games? OR is he simply just lore?

He was in the first Elder Scrolls game, Arena. He was the bad guy.

Thanks. Does he appear in any other ones?

He's mentioned in later games, but he does not come back.

The ultimate villian of the Elder Scrolls series. It was he that imprisoned the Emperor in an alternate plane, assumed his identity, and took his form for ten whole years before he was brought down by Tamriel's first hero, the Eternal Champion. He was also behind the destruction of the Battle Spire, working in tandem with Mehrunes Dagon. It was also he that was the driving force behind the War of Bend'r-Mahk.

After trials and travails, the Eternal Champion defeated Jagar Tharn below the Imperial Palace. This is the story of the first Elder Scroll's game, Arena.

He only appears in Arena, but is mentioned in nearly all the TES games.

Check out the http://www.imperial-library.info/places/ and the http://www.imperial-library.info/characters/arena.shtml to find out more about him.

Even with how little we've learned about him, he's a very interesting character.

"It is a but useless stick. Good for churning butter, or rowing a boat, but not for saving the Emperor."