Story of Abacus Cinch the main antagonist of My Little Pony: Equestria Girls
Biography[]
My Little Pony: Equestria Girls - Friendship Games[]
Principal Cinch first appears, calling Twilight to her office through Dean Cadence. She talks with Twilight about her application for the Everton Independent Study Program, admiring her as the best student the academy ever had. However, she then points that Twilight has to compete in Friendship Games, which will strengthen the academy's influence, as it always was. When Twilight tries to say that she's just a researcher and doesn't want to compete, wasting her time, Cinch tells her that she has influence due to the academy's high social status. The principal points that she can use that influence to get Twilight's application approved faster or even denied at once if she won't take part in Friendship Games, forcing Twilight to do so.
In Canterlot High School, Principal Cinch first spends some time talking with Principal Celestia, as the latter shows her the school upgrades. They end up seeing Human Five and Sunset Shimmer chatting with a confused Twilight, only for Cinch to reveal that Twilight is her best student, apologizing for her curiosity. After that incident, Cinch forbids Twilight from making friends with the Canterlot High students. Principal Cinch also ruins Pinkie Pie's welcoming party, forbidding her students to have fun, and Pinkie couldn't do anything at the moment, as Twilight accidentally drained her magic which made Pinkie too tired to oppose the principal.
During the main action of the games (in song "Acadeca"), Cinch observes her students' work and gets angry or disgusted anytime they fail to win, like in bakery competition, which was won by Pinkie Pie and her tremendous "Mona Lisa" cake. While Principal Celestia, Vice-Principal Luna and Dean Cadence judge most of the competitions, Principal Cinch judges the last one, a math competition between Sunset Shimmer and Twilight Sparkle, pointing out that Sunset's answer is incorrect.
Afterwards, Principal Cinch instructs the remaining Shadowbolts before Tri-Cross Relay, inspiring them to victory and hoping that Twilight could deal with the first part of the relay, hitting a target in archery which is actually the P.E. standard for Crystal Prep Academy. However, Twilight fails miserably, not being able to hit the bulls-eye with an arrow, which enrages her classmates. She is helped by Applejack, who then gets pony-up for her honesty, which was accidentally drained by Twilight. The latter drops her pendant which opens several random portals to Equestria, releasing the Everfree Forest into this dimension. It crushes the track, nearly killing Sunset Shimmer and Sugarcoat in process, as Rainbow Dash and Indigo Zap prove themselves to be more competent racers. However, Rainbow saves Sunset, getting pony-up, and then Sunset wins the race. A bit later, Principal Cinch witnesses Twilight draining Rainbow Dash's magic and Sunset yelling at Twilight about all the magic, learning that she drained much magic yet and decides to use it to her advantage. Upon being caught eavesdropping, Principal Cinch accuses Canterlot High of using magic to cheat. however, Celestia tries to convince Cinch that no one had advantage due to that.
Before the final competition, Principal Cinch and the Shadowbolts try to convince Twilight to releasing the magic to the point of peer pressuring her to do it in their villain song "Unleash the Magic". However, the magic goes unstable and corrupts Twilight, as everyone, including Cinch, looks on in horror. Twilight transforms into horrifying Midnight Sparkle, and Cinch tries to flee from her, directly calling Twilight a "monster" when she is caught, a statement which disgusts her students.
After Midnight Sparkle is defeated, Cinch accuses Canterlot High of using magic to cheat once more and demands that Celestia and Luna forfeit the Friendship Games. Both schools call Cinch out for causing Twilight's corruption by attempting to use magic to cheat and win the game. Cinch then threatens to report the incident to the school board. However, she is mocked by the others, as they pointed out that there is no way the board would believe her claims about "magical students with wings, portals to different dimensions, and a talking dog" (referring to Spike), as Spike tells her that it would never ruin her reputation. Though Cinch is enraged, she then saves her face and leaves in defeat, most likely leaving to Crystal Prep the next day with the other students and Dean Cadence.
Equestria Girls Specials[]
In the special "Dance Magic," Sunny Flare mentions that Cadance has taken over as the Principal of Crystal Prep, meaning that Principal Cinch either quit, retired, or was fired by her superiors for her actions. It's also quite plausible that she was arrested on numerous charges.