Am I really cool by just being myself?

Back in the day, kids shows taught us to just be yourself. However, I sometimes compare myself or try to be like certain video game/anime characters, and beat myself up about it when I can't. I know they're fictional, but I wish I can be as kind, cool, & brave like Sonic the Hedgehog or Sora. They'll always help a person in need, while I would stay out of it. I feel lame & that my kindness/helpfulness is useless.