If we are to include personality into rock music...I would say rock has always been rebel-ish for the most part. The 50s it was devil music and same with the 60s when it was devil and transformed into anti-war kind of stuff. Then in the 70s it became harder and was moving towards the hard rock you saw in the 80s and then a new form of pop started to come along that was more than just the music and became kind of corporate in approach. That was different from what had previously been done. The 90s brought in a wave of being against the corparate form and being the 'alternative' to it.

That is my bull<img src="/xxx.gif"><img src="/xxx.gif"><img src="/xxx.gif"><img src="/xxx.gif"> rebel personality thingy and I am sticking to it