Imagine Finn Turning Evil. This is the outcome.

Screw it All and Let it Go parody

The moon glows bright with a smile tonight, not a park guest to be seen.

A kingdom of lies and magic, and some fairy who is green

They've tricked me and now I have lost everything

Don't they see I won't be involved with Disney

Don't let them in, don't let them see

Be the leader you always need to be

Conceal don't feel, don't let them know

Crap, now they know

Screw it all, Screw it all

It's time for you to see

Hate it all, Hate it all

Now I don't trust Disney

Screw you all because I'm free

Just let me be

I always hated you anyway

It's funny how I used to be the hero everyday

And now that I'm the villain, I'm changing the game

It's time to see what I can do

I promise I will defeat you

What's right? What's wrong? Who will I be?

Who cares, I'm free

Screw you all, screw you all

How evil can I be

I will rise, you will fall

For you it will end badly

I don't care what you might actually say

Just let me beeee

My powers greater than you have ever known

I've got an army though you think that I'm alone

I've become someone that you now have to fear

And I'm never going back, let me make that clear

Screw you all, screw you all

There's no time to save me

Screw you all, Screw you all

Because this is the first time I am free

This will be your downfall

You will be beat

I always hated you anyway