"You said you would change the world
but so far, you haven't
You said that you would be the greatest villain that Gotham has ever seen,
but so far you aren't.
You said that I'm just a sidekick,
but I'm not.
You said that after you kill the Batman, things would change
. Between the two of us, then i would be more than just a "sidekick".
I would be and the only Harley Quinn.
So for now on Joker, I might not be more than a sidekick,
but later, I'll be something more. "