I Can Be Anybody

I'm a superhero, I'm here to save the day
Need to be rescued? I'm on the way
I'm a policeman, a real traffic cop
I tell the cars when to go and tell them when to stop
Now I'm a baker, I'm baking lots of cakes
Won't you have a bite? Mmm. They taste great
I'm a firefighter, this hose is what I use
I can be anybody, anybody that I choose