He's a crazy nut that does whatever he wants for no reason. I liked that. Afterwards they had to build up the main antagonist with all of this background psychological babble as to why they were doing what they wanted. And that's why kefka shined above the rest to me. He went nuts and did whatever he wanted for no reason. He could kill 20 children in a heartbeat and then take their friends out for ice cream to apologize, and then kill those kids too just because he wanted to.