The bat that Ozzy voices uses song titles as answers when you try to walk in his cave without doing the mission he gives. He says "I don't wanna stop" or "I'm not going away" or "Never say die". The bat also looks like Ozzy from the mid 80's when he looked fairly obese and had long blonde glamstyle hair.
A voice from the war, a chromed long-toothed beast, a four wheeled plow, and a black haired young disciple of metal. These are the tools, and the horrors of a future battle that will ensue on the 16th day of the month October, and we must be ready...