You can now create 6" action figures of your Rock Band video game characters on the Rock Band website. Make sure you have an account that has your game information and you'll be well on your way.
I decided to see what they would look like from some characters I made for my Rock Band, in the case it's the Smashing Pumpkins:
So if you own Rock Band you can actually make an action figure of yourself. The only problem is that each figure costs about $70.00 to actually be made.