Tell Me Some Stuff You Know About Slash, Duff, Axl, Matt, and Izzy!?

I am a huge GN'R fan. I know some stuff about them, but tell me stuff about them that you know and not many other people know! Like I know that Axl Rose can't be in the same room with some of the previous GN'R band members without getting into a physical fight (that answers peoples' questions like "why doesn't the original GN"R get back together?"). But what do you know about them that's interesting, I want to know!