Ruthless Aggression & "Superstar" Kevin Tate

I suck at searching for music so bad but I stumbled on two I felt fit the characters here. I found both of these themes just last night and today. Clearly I dont know enough about music outside of hip hop and such. I suck, I know. Anyway, I hope you enjoy.

Ruthless Aggression: Rammstein - Buck Dich Instrumental
Kevin Tate: Saliva - Superstar

If you want to know their back stories go to the youtube page and read it. It wont fit in here http://www.youtube.com/watch?v=8L2kP4woh1o