The Lunar Rangers

In a world of neverending discrimination against the small, the weak, and those inhabiting the moon . . . only three shall stand tall to defend those . . . mentioned before . . .

The Elements of Harmony protect Equestria and all of Ponyville . . .
Celestia protects all her loyal subjects and shimmers like the sun . . .

One group stands to protect the Moon and all its' glory . . . if only they can get over each other to do so.