Principal Cinch

Principal Abacus Cinch is a female human and the headmistress of Crystal Prep Academy and appears in My Little Pony Equestria Girls: Friendship Games.

Depiction in Friendship Games
She displays pride in her school, especially in her smartest student, Twilight Sparkle.

At some point in the film, she discovers that Canterlot High School has access to magic, and suggests to Twilight that she use magic to the Shadowbolts' advantage.

Personality
Principal Cinch is the haughty principal of Crystal Prep Academy, taking her students and culture in pride but prides itself mostly on the awards her school receives when winning the Friendship Games. She also considers the human Twilight Sparkle her prized student since she receives the most high scores in her school, but when she discovers magic withheld in her, she reveals herself to be an evil, competitive woman who has no reservations of exploiting her students and cheating in the Friendship Games.

Quotes
"I must apologize for the curiosity of my prized student."

- My Little Pony Equestria Girls: Friendship Games

"Incorrect."

- My Little Pony Equestria Girls: Friendship Games