Cornelius Stirk?

I recently finished the Knightfall story and I was wanting to know more about Cornelius Stirk. I'd never heard of him and he just came out of no where working with the Joker..for awhile. What can you tell me about him?

errr.... he's so irregular I know very little. Look on the charcater profiles of www.rasalgul.com. That has loads... good luck, mate, and have you read part 2 yet!?