I am ...

I am the villain.

That's what I heard

So that's how I act.

I am the hero.

That's what I've been told

So that's who I am.

I am only a side character.

That's what I was assigned

So that's what I must be.

I am only an attraction.

That's what the whistles tell me

so that's what I am. 

I am useless.

That's what the turned backs tell me

So I must be.

I am no one.

That's what they said to me

So no one, I am.

I am me.

That's what no one told me

So that is not who I am.