Fusion Fic with Gurren Lagann, One-Shot.

When Twilight stepped through Starswirl's mirror in pursuit of her crown, she wound up in an alternate universe... of ponies, who were engaged in a civil war. Most of the population had been enslaved by the minions of the mysterious Chaos Lord. Upon her arrival, Twilight met a younger version of Princess Celestia, and inspired a group of freedom fighters to rise against his rule. They mastered new magic, and vowed to hurl the Chaos Lord from his throne.

Now, Twilight and Celestia lead Team Harmony in their greatest battle yet: they face the General of the North, Indigo Zapp, and her monstrous walking battle station. Unless Twilight can gain control of the platform with her magic, she and all her new friends will die. But such a feat may require a sacrifice. One Twilight is not prepared to make...

Originally a bonus chapter in another of my stories, I decided to publish it as its own thing. This chapter is but one adventure in a potential universe, intended for fans of the anime. Not to say people who aren't familiar with the anime can't enjoy it.