Cozy Glow/Synopsis

The story of the tyrannical filly, Cozy Glow from My Little Pony: Friendship is Magic.

Marks for Effort
Cozy Glow first appeared in "Marks for Effort" where she was crying outside the Cutie Mark Crusaders' clubhouse. The Crusaders approached her and asked what's wrong. Cozy answers that she is having difficulty with her lessons at the School of Friendship and fears flunking out. The Crusaders, wanting to attend the School of Friendship too, decide to help Cozy with doing her homework and assignments.

The Crusaders teach Cozy how to be friendly while doing nice deeds for Sweetie Drops, Mrs. Cake, and Big Macintosh. After Cozy gets an "A" on her assignment, the Crusaders assist her further by helping her study for an upcoming friendship exam, during which she learns about the values of friendship represented by the Elements of Harmony. However, Cozy fails the test and runs away, which causes Twilight to accuse them for intentionally bad tutoring out of spite for not being allowed into the School of Friendship themselves.

After Cozy saw what she did to the Crusaders, she decides to go to the school's guidance counselor and confesses that she failed the exam on purpose so that the Crusaders would be allowed to enroll at the School of Friendship. When the truth was revealed, Cozy finally apologized to the Crusaders for what she did to them. Finally, the Crusaders were accepted at the School of Friendship as tutors. Cozy is last seen leaving with her new friends as they set out to tutor more students.

A Matter of Principles
Cozy Glow makes a background appearances in "A Matter of Principals".

The Hearth's Warming Club
She makes another background appearance in "The Hearth's Warming Club" just as Twilight dismisses the students for the holiday break.

Friendship University
She appears again in "Friendship University", giving Twilight the flyers that inform her about Friendship U, and later appears after Rarity questions how Flim and Flam could have gotten a hold of the School of Friendship's lesson plans.

Road to Friendship
Cozy Glow also appears waiting in line for Starlight's counseling in "Road to Friendship".

A Rockhoof and a Hard Place
She makes a background appearance in "A Rockhoof and a Hard Place".

What Lies Beneath
In "What Lies Beneath", Cozy stays behind to help Twilight organize the library, when she notices the Young Six having a difficult time studying for a friendship test. She manipulates them into doubting their confidence in their friendships. She offers them her study notes for help. At the end of the episode, the Young Six meet Cozy upon their journey underneath the school, where she learns about the Tree of Harmony's test on their friendship skills. As the Young Six drift off to sleep in exhaustion, Cozy ominously looks at the vent where the Tree of Harmony is hidden.

School Raze
By the season finale episode "School Raze", Cozy's villainous nature is revealed as she manipulates everyone. She tricks the Mane Six into going to Tartarus, captures Starlight Glimmer, and, with the help of co-conspirator Lord Tirek, steals the school's artifacts to harness their magic and take over Equestria. After Chancellor Neighsay assumes control of the school, Cozy orchestrates a student uprising to take back her position as school headmare. She also locks the Cutie Mark Crusaders in a hall closet when they try to distract her, stating that she was already aware of their plan, and she tricks the students into believing the Young Six are trying to destroy the school. However, they soon begin to have doubts when the Young Six sacrifice themselves to save each other from Cozy's absorbing spell.

Cozy's plans are eventually foiled by the intervention of the Tree of Harmony, causing the magic she stole to return to its rightful owners. Caught among the Young Six, the Mane Six, the school students, the princesses, and the royal guards, Cozy Glow was unable to escape and was finally defeated. For her crimes and actions and being figured to be too dangerous to wander around other places, not only was she expelled from the school, but she was also sentenced to imprisonment within Tartarus, where she tried to make friends with Tirek as she smiled evilly.

The Beginning of the End
In "The Beginning of the End", while still imprisoned with him, Cozy Glow annoys Tirek by continuing to try and befriend him, before the both of them are suddenly transported out of Tartarus. Emerging within a mysterious cavern, Tirek and Cozy Glow are met by Queen Chrysalis, who immediately accuses them of summoning her, though Cozy Glow assures her that they thought she freed them. As this happens, King Sombra suddenly appears, causing the three to accuse him of summoning them, only for Grogar to reveal himself to be the one who was responsible for summoning them. Tirek, Chrysalis and Sombra are shocked to see him, as they believed he was only a legend, though Grogar assures them that he is real and states that he summoned them as part of his plan to rid Equestria of Twilight Sparkle and her friends.

Seeing that Cozy Glow does not know who he is, Grogar decides to demonstrate his power by giving Tirek a sample of magic that revives much of his strength. Tirek then tells Cozy Glow that Grogar is ancient and extremely powerful, as well as the former ruler of what would become Equestria, claiming that he had heard stories of his tyranny when he was younger. Grogar then tells the villains of how he created monsters that roamed the land and took whatever they wanted under his rule, before Chrysalis remarks how he was banished by Gusty the Great, although Grogar claims that he was only temporarily weakened when she took his bell; however, Cozy Glow points out that, since he has been weakened before even Tirek was born, he has a very different idea of what "temporarily" means, much to his annoyance.

Grogar proceeds to tell the group that he has watched them and their failures to take over Equestria, and asks them why they have always been defeated by the same six ponies each time, with Cozy Glow stating that she's just a kid. Grogar rebuffs their answers and claims it is because their enemies work together as a team, demanding that the villains join forces with him to take over Equestria. Sombra, however, refuses to serve Grogar and arrogantly proclaims that he will take over the Crystal Empire by himself, causing Grogar to send him off to the Empire on the conditions that, if he fails, he will serve him or be destroyed again. After this, Grogar tells the others to prepare to work together and leaves. Cozy Glow immediately compares working together to making friends, telling Tirek and Chrysalis that they are in luck since she knows "all about that", though the former only flicks her away in annoyance.

Cozy Glow tries to get Tirek and Chrysalis to work together by having them each say nice things to each other, though this falls apart when Chrysalis refuses to say anything nice about ponies. Grogar then approaches them and states that he hopes the three of them will be enough to help his plans along, causing Tirek and Chrysalis to ask about Sombra. Grogar shows them that Sombra had failed in his plans to conquer Equestria and had again been defeated by the Mane Six, remarking that he will at least serve as an example to them as what will happen if they don't submit to his plans. Having seen this, Tirek, Chrysalis and Cozy Glow unanimously agree to serve Grogar, though are seemingly left nervous by the thought.

Uprooted
Cozy does not appear in "Uprooted," but she is indirectly mentioned by Yona when she recalls how she and her friends defeated Cozy.

She's All Yak
Cozy also does not appear in "She's All Yak," but she is directly mentioned by Sandbar when he lists her and Sombra as two ponies worse than Yona.

Frenemies
In "Frenemies", as Grogar is working, Cozy Glow approaches him and tattles on Tirek for leaving food out, Tirek quickly approaching Grogar and telling him not to trust anything she says afterwards; though Grogar is quick to point out that he already doesn't trust anything that they say. After being annoyed by Chrysalis, Grogar informs the villains that he is leaving and demands that they all stop fighting and find a way to work together so that they can accomplish their goals. Cozy Glow assumes herself in charge and plans a team meeting. She approaches Tirek about it, which he agrees to go so long as she leaves him be. Cozy then approaches Chrysalis, who also agrees to go as long as there's cupcakes. At the meeting, Cozy Glow encourages the fact that they all need to trust one another, which Chrysalis finds hard to do as Tirek is trying to steal her magic. Tirek firmly denies doing such a thing (returning the magic he actually had stole to a cupcake that Chrysalis devours), and calls her out for constantly ranting to her log, before joining Chrysalis in telling Cozy Glow that she wasn't left in charge. Cozy Glow then tries to get them all to agree with one another over their common goals, leading them all into singing "Better Way to be Bad" with one another, only for them all to devolve into bickering.

Grogar returns to see this, and, upset to see they have not yet resolved their differences, decides to send them off on a mission to retrieve his Bewitching Bell from Mt. Everhoof so that they can learn to work together. Cozy Glow and the others fight over who should lead the mission based on their previous feats, only for Grogar to angrily overpower and remind them that they all failed before and cannot work alone. Upon arriving at the foot of the mountain, all of the villains immediately split off and begin to find their own ways of getting up; Cozy Glow trekking up the mountain path until she comes acros the residence of Rusty Bucket. She tries to pretend that she's a lost little filly in order to get Rusty to take her to the peak of the mountain but he refuses. This causes her to lose her temper but Rusty tells her to stay quiet or she will cause an avalanche. She tries different ways of getting past but keeps failing. This causes her to become angry which causes a giant snowball to fall on her and take her back to the bottom. Cozy Glow returns and finds that Tirek made a camp for himself. He proceeds to laugh at Cozy Glow upon seeing her return, and explains to her that he had already deduced that getting up the mountain by himself would be impossible, and so had planned to wait for her and Chrysalis to fail so that he could take what they learned and use it to his advantage. Cozy Glow and Tirek proceed to bicker — Tirek calling her out for her fake cutesy persona and constant manipulations, and Cozy Glow criticizing his arrogance, while also mocking him for talking to his "Gram Gram" in his sleep — until they are approached by an Ophiotaurus, which they both blame each other for attracting. Suddenly, a female Ophiotaurus arrives and seduces the other one, Tirek quickly realizing that the former is actually Chrysalis in disguise, who admits that she needs their help, causing Tirek to gloat about his own strategy.

That night, Cozy Glow and the others proceed to bond with each other over their previous endeavors; her remarking about how she almost caused all of Equestria's magic to disappear and it would have been worthwhile if it meant seeing Twilight and her friends defeated, also admitting that working with Chrysalis and Tirek may not be such a bad thing. The next day, the three villains proceed to combine their abilities in order to scale the mountain, only to find that the cave at the top is protected by a magical barrier, which Tirek cannot absorb since he can only take magic from living beings. With some convincing, Chrysalis allows Tirek to take her magic to become powerful enough to create an opening in the barrier, allowing Cozy Glow to enter the cave and retrieve the bell. Tirek then returns Chrysalis' magic, stating that he wasn't sure he would do so and that it seemed smarter to work with her than fight. The villains begin to reflect with one another over how it felt to rely on others for a change, before Chrysalis snaps them out of it, not wanting friendship to infect her like it did her hive. The three then concur that Grogar has grown too powerful and decide to betray him together, and Cozy Glow agreeing due to her love of backstabbing before wondering waht they can do with the bell. She and the others later return to Grogar's lair and fool him into thinking that they failed while yet still becoming allies, though in reality have kept the bell for themselves.