@DieselCrab  
Magical Friendship Ninja Horses!
 
Horses, count it off:  
1! 2! 3! 4! Horses!  
Magical chain reaction. (Horses!)  
Livin’ underground! (Horses!)  
Ninjutsu action! (Horses!)  
It’s a heck of a tooooooooooooooooooown!
 
Horses, count it off:  
(1!) Live by the code of the martial arts…  
(2!) Never fight unless someone else starts.  
(3!) Always stick together, no matter what…  
(4!) If all else fails, then it’s time to kick butt!
 
I love bein’ a….  
I love bein’ a….  
I love bein’ a Horse!
 
Magical Friendship Ninja Horses!
 
Horses count it off:  
1! 2! 3! 4! Horses!  
There’s no pony better. (Horses!)  
Shredder: Watch out for Shredder! (Horses!)  
They’re like magic twisters! (Horses!)  
Those youthful sisteeeeeeeeeeeeeeeeeeeeeeeers!
 
1! 2! 3! 4!  
1! 2! 3! 4!
 
Magical Friendship Ninja Horses!  
(Horses! Horses!)

♪Magic Friendship Ninja Horses  
Magic Friendship Ninja Horses  
Magic Friendship Ninja Horses  
Heroes in a horseshoe  
PONY POWER  
They’re Equestria’s most fearsome fighting squad♪  
Rainbow: We’re really cool.  
♪They’re heroes in a horseshoe  
And they’re buds♪  
Applejack: Hey, get along now!  
♪When the evil Tirek attacks  
These pony gals don’t cut him no slack  
Magic Friendship Ninja Horses  
Magic Friendship Ninja Horses  
Celestia taught them  
To be ninja ponies♪  
Pinkie: She’s an amazing mare!  
♪Rainbow Dash leads  
Twilight Sparkle likes to read♪  
Twilight: Yes indeed, Jack!  
♪Applejack is honest, but rude♪  
Applejack: Ah need a break…  
♪And Pinkie Pie is a party dude♪  
Pinkie: PARTYYYYYYYYYYY!!  
♪Magic Friendship Ninja Horses  
Magic Friendship Ninja Horses  
Magic Friendship Ninja Horses  
Heroes in a horseshoe  
PONY POWER♪

AJ and Dash should switch. Cause Raph was the more hotheaded of the two.

Twilight is a purple egg-head. She’s Donatello.

It’s Applejack who should be Casey. And Fluttershy as Donatello.

Fluttershy should be one of these four, actually. She IS ninja, she kung-fu’d a bear for Celestia’s sake.

Fluttershy would be Casey Jones.

And Rarity will be April, Celestia is Splinter, and Fluttershy will be… Leatherhead?

Pinkie as Michelangelo? PERFECT