In the old EU he was President of the New Republic at one point.
Whaddya mean "was"?
In rode the Lord of the Nazgûl. A great black shape against the fires beyond he loomed up, grown to a vast menace of despair. In rode the Lord of the Nazgûl, under the archway that no enemy ever yet had passed, and all fled before his face. All save one.
People will tell you that Admiral Ackbar didn't see this lame ending coming. Don't believe them. I finally had one of my Mon Calamari lieutenants substitute for me in that scene. That's why I looked so comfortable operating a keyboard without saying anything. But not before I did 3,720 takes where I kept yelling "IT'S A TRAP!!" just to piss Rian Johnson off.