When I'm playing 'Rock Band,' I'm like, 'Man, someday, later on in life when I'm a famous rock star...' Which gets a little harder to convince myself of as I reach middle age, but it still happens a lot.
I'm a dad now, so now I just don't care what I look like. Once you've created life, you just don't care what anyone thinks.
For every character, I think about who they are, their story, what they are, and who they were before their game started. What was their life like? Where did they grow up? What were their parents like?