Sonic X/My Little Pony

Version 1: (All Versions Must Have Sonic The Hedgehog As Rainbow Dash Not Others cuz they're both speedy)

Rainbow Dash As Sonic

Fluttershy As Tails

Applejack As Knuckles

Pinkie Pie As Shadow

?? As Cosmo

?? As Rouge

?? As Big The Cat

Spike As Christopher Thorndyke

?? As Amy

Princess Celestia As Chuck Thorndyke

Queen Chrysalis As Dr. Eggman

?? As Mr. Tanaka

?? As Ella

And More...