Principal Abacus Cinch (simply known as Principal Cinch) is the main villain of My Little Pony Equestria Girls: Friendship Games. She is a headmistress of Crystal Prep Academy.
- Monica Jones - She stole her onyx amulet and used it to summoned a purple-skinned female demon named Midnight Sparkle. She also held Monica's family and friends hostage and later killed them in cold blood without showing any remorse. She later kidnapped and killed her 16 years before the events of Equestria Girls: Friendship Games.
- Quentin Beck - Principal Cinch was his assassination target four years before the events of Spider Man: Far from Home.
- (after witnessing Katrina Weatherly defeats Alvin Seville) An impressive start.
- (reacting to Sunny Flare's suggestion) What?! An invasion?!
- (last words before being killed by Iron Will in order to increase Indigo Zap's power) Yes, Iron Will?
- She made a cameo appearance in Equestria Girls: Lethal Alliance loading screen.
- Interestingly, she also made her second cameo appearance in Equestria Girls: Days of the Past loading screen.
- Before Iris Quinn was cast, Grey DeLisle, Tress MacNeille, Glenn Close, April Winchell, and Susanne Blakeslee were considered to voiced Principal Cinch.