Principal Celestia

Principal Celestia is a female human and Princess Celestia's human world counterpart in the My Little Pony Equestria Girls film series. She is the principal of Canterlot High School and older sister of Vice Principal Luna.

My Little Pony Equestria Girls
In the alternate world that Twilight Sparkle travels to in My Little Pony Equestria Girls, Celestia appears as the principal of Canterlot High School. When Twilight's stolen crown ends up in Fluttershy's hands, she turns it over to Principal Celestia for safekeeping. Twilight goes to Principal Celestia about this matter, and Celestia explains that the only way for Twilight to get the crown to be voted Princess of the Fall Formal.

At the Fall Formal proper, Principal Celestia congratulates the school students for fixing up in the gymnasium after Snips and Snails trashed it earlier, and she announces Twilight Sparkle as the winner. She later commends Twilight for her role in defeating Sunset Shimmer.

Equestria Girls: Rainbow Rocks
In My Little Pony Equestria Girls: Rainbow Rocks, Principal Celestia first appears walking into the gymnasium with Vice Principal Luna to check on the students making signs and posters for the CHS Musical Showcase. She expresses hope that the showcase will be even better than the Fall Formal, inadvertently reminding the students of Sunset Shimmer's actions.

After the Dazzlings' arrival at the school, the Rainbooms try to warn Celestia and Luna about their true nature, but by the time they are reached, they have already been hypnotized by the sirens' song. Celestia and Luna later serve as the judges for the Battle of the Bands, and the Dazzlings hypnotize them and coerce their decision in favor of the Rainbooms instead of Trixie and the Illusions.

Music to My Ears
Principal Celestia briefly appears in the animated short Music to My Ears. When she catches DJ Pon-3 listening to music on her headphones in the school hallway, she confiscates the headphones and gestures for DJ to get to class.

Equestria Girls: Friendship Games
In My Little Pony Equestria Girls: Friendship Games, Principal Celestia and Vice Principal Luna attempt to raise school spirit with a pep rally before the Friendship Games take place, but they are unsuccessful until Rainbow Dash sings an uplifting song and ponies up.

Later, she gives Principal Cinch, the headmistress of Crystal Prep Academy, a tour of CHS, during which she sees a girl that looks like Twilight Sparkle. Cinch refers to this Twilight as her student, and Celestia believes her to be Twilight's twin sister until Pinkie Pie confusingly explains that she is the Twilight from the human world.

Celestia judges the Friendship Games with Luna, Cinch and Dean Cadance. She denies any involvement of magic in the games, putting her in direct opposition with Cinch. When an incident results in Twilight transforming into Midnight Sparkle, Cinch demands Celestia's forfeit, but Celestia holds her own against the duplicitous CPA principal. In the end, she declares both schools winners and welcomes the Twilight of Crystal Prep as Canterlot High's newest Wondercolt.

Merchandise
Two dolls of Principal Celestia have been released for My Little Pony Equestria Girls: an "Original Series" doll with hairbrush, accessories, and pony Celestia figure, and a deluxe "Through the Mirror" doll with accessories, guitar, and microphone. The front of the doll and pony set's packaging reads "I'm the school principal, and a pony princess!" The back of the packaging reads "As a princess of Equestria, I guide and protect all the ponies in the land." and "As principal of Canterlot High, I oversee students and keep them under my wing!"

Personality
Like her Alicorn princess counterpart in Equestria, Principal Celestia is kind, calm, wise, and fair in her duties as a high school principal. Throughout most of the first film, she speaks in a mellow and somewhat disinterested tone, but her warmth and affection shows when she presents Twilight Sparkle with her crown.

In the third film, Celestia displays a wider range of emotion in her expression and tone, such as mild annoyance when Flash Sentry interrupts her speech during the pep rally and resentment toward Principal Cinch when she disparages Canterlot High. Against an openly hostile foe like Cinch, Celestia keeps her cool and wits about her, knowing what words to use in order to turn the tables.

Quotes
"Were you interested in running for Princess of the Fall Formal this year?"

- To Twilight Sparkle, My Little Pony Equestria Girls

"Well, if you do need anything else, my door is always open."

- My Little Pony Equestria Girls

"A true princess in any world leads not by forcing others to bow before her, but by inspiring others to stand with her. We have all seen that you are capable of just that. I hope you see it too, Princess Twilight."

- My Little Pony Equestria Girls

"I just wanted to tell you all how pleased I am that so many of you are going to participate in the first ever Canterlot High School Musical Showcase!"

- My Little Pony Equestria Girls: Rainbow Rocks

"Dark magic? I find that very hard to believe."

- My Little Pony Equestria Girls: Rainbow Rocks

"Please do not drop the microphones."

- To Snips and Snails, My Little Pony Equestria Girls: Rainbow Rocks

"I didn't know Twilight had a twin sister."

- My Little Pony Equestria Girls: Friendship Games

"I'd like to think that saving the world benefits us all."

- To Principal Cinch, My Little Pony Equestria Girls: Friendship Games

"Good. I'm sure they would be very interested in hearing all about the magical students with wings."

- To Principal Cinch, My Little Pony Equestria Girls: Friendship Games