It makes sense that Todd would hang out with assholes. I hate to give Onstad (and myself) hope, but I have to say this whole concept is the shit. I hope it doesn't fizzle out. Also, there's something disturbingly Ray-like in Il - something to do with the glasses, certainly (how do you call Kim Jong Il when you're not feeling like typing his whole name, anyway? Kim? Jong? Il?)
Mostly you call him Kim Jong-Il. Kim is his family name, but it's also the most common Korean family name to a completely insane degree so it won't be clear who you're talking about unless you're a Wikipedia article with his full name at the top. Jong-Il is his personal name. If you call him that then it'll be clear who you mean, but to the best of my knowledge, it'd be a little weird in the same way spending a conversation referring to the US President as "Barack" would. Then again, since he's on a road trip with Todd it may not be inappropriate for this context.
You could call him Chairman Kim, Supreme Commander Kim, or General Secretary Kim if you wanted, too.
Edit: "Official biographers claim that his birth at Baekdu Mountain was foretold by a swallow, and heralded by the appearance of a double rainbow over the mountain and a new star in the heavens."