Battle against a true hero

I’m a hero and I swear I will take you down!
All have failed, but I will spear you to the ground!
Slaying monsters that are sometimes twice your size
Heartless body without a real soul inside!
I won’t let you get away with what you’ve done
You have dusted he who’s brighter than the sun!

Funny, you have got to be kidding me, undyne
What will you do when it finally comes your time?
I crushed that pathetic whelp’s skull into dust
He much too easily endows all his trust
Despite your strength, it won’t take long for you to fall
Crashing down, though right now you are standing tall!
I’m really getting a kick out of this battle
Soon I’ll have your head and a melted puddle

I will not fall
I must save
All of the kingdom
It’s my job!
I’m standing tall
Just for them
With nothing to lose
He’s gone!

I can’t recall
The last time
That was this much fun!
What a rush!
Slow to a crawl
Speed it up!
You can do better!
Promise

Every time I raise my spear, I can’t help but see his smile
Telling me that it’s alright I have to protect all the rest!
You won’t break me down you’ve got nothing but a narrow aisle
Seemingly your love is high, so I’ll put you to the test!

I am starting to get bored, better hope you keep me amused
As soon as it isn’t fun, I’ll just be more determined!
I really missed the adrenaline from being so bruised
On the verge of death let’s finish this!

You can’t hear me scream your name, but I swear I’m calling out
I never wanted to press fight, but I’m not in control!
Remember, we were friends before? So just end my life, undyne!
I can reset all of this terror