All they need to do is take important figures who match the traits of Mane Six.

For Instance:

Fluttershy - Barack Obama

He's introverted, cares about the environment and other people and wants to end street violence. Mr. President is an all-around '60s hippie who just can't show too much of an egotistical side.

Rainbow Dash - Ben Roethlisberger

He's no body's bitch, not even in the NFL. Ben has no tolerance to rules, is cocky as hell and loves to show off. Granted, he's already made it to the big leagues but that doesn't stop him from showing that he's still number one.

Pinkie Pie - Lil B "The Based God"

Who reps pink, sings completely ludicrous songs and is fond of cooking? Yes, the similarities are astounding, but Lil B would make possibly the greatest fill-in that Pinkie Pie could ask for.

Besides, he looks like so many people that he could, most likely, pull off a pony as well.

Rarity - Ralph Lauren

Back in the day Ralph had some SERIOUS sex appeal. But now he's old, but could still (probably) pull off Rarity. He's a judge of fashion, and knows that his mark in history has been made. The haters can't touch him, but they sure as hell wish they could. Who wouldn't want a hunk like that?

Applejack - Billy Ray Cyrus

He's probably saddened by the "loss" of his daughter to the media's unfortunate love for corruption. But even still, Billy carries a strange aura which resonates a constant sense of relevancy, even after years of being irrelevant. His "cowboy" and "country" personality would make a fine addition to the cast.

Twilight Sparkle - Carroll "Poke" Runyon

This guy's literally everything Twilight was... except he sends letters to God instead of Princess Celestia. An occultist, practitioner of the middle path, he is undoubtedly a great leader for the pack.

In fact, forget Twilight, Poke's voice is so wonderful to listen to that no one can compare. Sorry Tara, looks like you're getting replaced.