She is the founder, owner, and seamstress of Evie's 4 Hearts clothing line. Her boyfriend, Doug, serves as the accountant for her business, as Evie is too busy to keep track of payments.
- Evie is secretly excited to go to Auradon Prep in hopes of finding a perfect prince. She soon realizes that she is much more than a pretty face, and there's more to life than being the fairest of them all. Armed with her mother's Magic Mirror, she uses it to help her villainous peers carry out their parents' evil plan.
Evie is a girl who is smart, flirty, and very kind in the long run. Unlike most of the villain kids, she is very pleasant, to the point that she was able to make the sourest villains smile with her laughter at her sixth birthday party. But don't let her charm fool you, Evie is loyal and authoritative when she wants to be. Due to her mother's insistence that being beautiful is all that matters, Evie has problems with her own vanity and is sensitive to how others view her; her biggest fear was her not ending up being the fairest of all. While she wishes to find a perfect prince for herself, she is not foolish to fall for a prince who looks nice but has an ugly personality, as she rejected Chad Charming when she found out how arrogant he is. She is quite intelligent, especially in chemistry. Over the course of the film, she gains more self-confidence about herself and learns there is more to life than being the fairest of them all.
Six months later, Evie becomes much wiser, advising Mal to stop using spells to help her adapt to her new life. She also developed feelings for Doug and eventually started dating him.
In Isle of the Lost, Evie is described being the fairest of them all, with ocean blue hair falls from her forehead in a striking widow's peak, dark brown eyes, and rosy lips. In the film, Evie likes to wear her hair out, whereas in Isle of the Lost she wears it as a V-braid. Just like the color of her hair, Evie wears mostly blue and black clothing. Her usual outfit is a heart-shaped ruby necklace, a dark blue cape paired with a printed leather skirt with spiderweb leggings and black combat boots. She is very well maintained, from her well-plucked eyebrows to the makeup her mother insists upon. She never leaves home without her crown or her mother's approval of her appearance.
At the beginning of the film, Evie is seen wreaking havoc with her friends in an area of the Isle of the Lost. When Maleficent gives the news that they are going to attend Auradon Prep, she is the most excited about the group, mainly because there would be many princes there. Maleficent reveals that her plan for them is to get the Fairy Godmother's magic wand once in Auradon to release the captive villains on the Isle. Before leaving, the Evil Queen gives Evie what was left of her magic mirror that was put in a hand-mirror, which will only help her find things. Upon arrival in Auradon Prep, she is greeted by Audrey and Ben with the fact that she is a princess as well, but is slammed down by Audrey who said she was not a real princess and that her mother's royal status was stripped off when she was imprisoned on the island, crumbling Evie's hopes. After meeting a student named Doug who told them where their rooms are, Evie quickly falls in love with the room but immediately agrees with Mal that the room was gross.
That night, the girls go to Jay and Carlos' room to check on what they were doing. While they are both having fun, Mal reminds them that they must prove to their parents that they were evil, then she asks Evie to ask her magic mirror where can they find the wand. Evie tries to get the mirror to tell them where the wand is, only for it to be vague and misunderstand her questions. However, she finds out where the wand is displayed, which leads them to a museum that contained many items pertaining to their parent's stories. While in the museum, Mal casts a spell to put the security guard fast asleep to get the wand. The group attempts to steal the wand, but when Jay tries to steal it, he accidentally sets off an alarm; however, Carlos is able to trick security into thinking that it was a malfunction with the system.
Attending school, she develops a crush on Chad Charming, while in the chemistry class, she cheats by finding the answer to the question by telling the mirror discreetly when the chemistry teacher wasn't looking. Chad decides to talk to her later on, during which Evie reveals how her magic mirror works, causing Chad to realize she cheated. Chad asks her if she could do his homework, which she agrees to do, and also manages to get some information from Doug about the coronation, which will have the wand in use. She passes this along to Mal, who decided to make a love potion-laced cookie to win Prince Ben over. In the kitchen, the group nearly finishes the recipe, except for a missing ingredient: 'a tear of true sadness'. When Lonnie comes in, she asks them if they needed any help, then starts talking about how her parents make her happy by baking her delicious cookies. Hearing this makes the villain kids morose, then Lonnie understands that they never received any love from their parents, causing her to cry over their misfortune and unwittingly giving Mal the tear for the recipe. The next day, after the tourney game, Evie sees that her chemistry teacher has her magic mirror, which Chad Charming gave to him. Her chemistry teacher, now knowing that Evie cheated, nearly has her expelled but is stopped by Doug, who tells him it was just an accident. The chemistry teacher says that if she passes the test, she will not be expelled. As a result, Evie gets away with a B+ in the test. She also begins bonding with Doug, who encourages her to not hide her intelligence.
When Mal tells Evie that Ben asked her out for a date, she helps Mal by dressing her up and giving her a nice makeover; the two bond as she does this. The next day, while the group attended class, Fairy Godmother announces the next day is Family Day and tells them that they cannot bring their parents to Auradon, but she offers them to video chat with their parents instead. While chatting with their parents, The Evil Queen is shocked to see Evie beautiful. After hearing their parent's bickering, Jay switches off the video chat abruptly, though the group is left with doubts over their plan. During Family Day, Evie is talking to Queen Belle when Mal is accosted by Audrey's grandmother, Queen Leah, for her mother's curse on Aurora. Mal tries to apologize for the misery her mother made, but is suddenly attacked by Chad as well. In response, Evie uses her magic mirror to reveal Chad as the biggest jerk in the land. He angrily tries to push the mirror out of her hand, causing Jay to defend her. Evie uses a sleeping potion on him. Doug is about to forgive Evie but is stopped by Chad. After the scuffle, the kids decide they must get the wand and prove to their parents that they can be just as evil as them now that they realize that the people of Auradon can't accept them.
As the day of the coronation neared, Evie serves as emotional support for her friend, even agreeing with her that keeping Ben under the spell after the villains are freed is too much.
At the day of the coronation, she made a beautiful dress for Mal. This is something that makes her mother, the Evil Queen, happy. When Jane accidentally breaks the magical barrier around the island, Maleficent is freed from the island and she comes in the Auradon Cathedral. Fairy Godmother tries to stop her, but Maleficent already cast a spell to freeze everyone except for Mal and her friends. Jay and Carlos try to stop her but fails. When Maleficent transforms into her fearsome dragon form. Evie uses her magic mirror to defeat her but is halted by Mal who gives her mother a stare-off challenge in which Maleficent fails and turns into a lizard, a representation of the little amount of love in her heart. With the crisis averted, Ben is proud of the group's noble act and tells them that they must trust their hearts and have faith. Evie, along with Mal, Jay and Carlos choose good and they enjoy the party with her friends, singing and dancing with Doug.
Evie is first seen as she drags Mal away from her conversation with Ben to fit her for her Cotillion gown. Evie fits Mal for her gown in their room as Mal complains at the tightness of the dress. Mal asks Evie if she ever thinks about what they would do if they were still back on the Isle of the Lost, but Evie merely laughs it off. They both watch the TV, where it shows the royal couple dining with Aladdin and Jasmine. Mal uses her spellbook to read her "Lady Manners" book extremely fast to prepare for the upcoming Cotillion. She loved it.
Evie scolds her for using her magic and being dishonest to Ben and takes her spellbook away from her. Mal inquires if Evie ever missed breaking rules and running wild, to which Evie firmly says no. She goes on to say that Auradon is the 'land of opportunity' and they can be whoever they want to be. She tries to distract Mal from her unhappiness by showing off the Cotillion shoes she made for her.
As the Core Four walk together to class, Evie asks Jane and Lonnie if one of them wanted the opening for a dress fitting, and Lonnie claims it first. Evie assures Jane that she will fit her later before walking away with Lonnie. Evie later comes back to join in on Mal's conversation with Jane as Lonnie gushes about Mal and Ben's future wedding. Evie acts excited, while Mal is surprised and frantic. As Ben arrives, Jane consults him on Cotillion details and Evie and Mal leave.
Evie is then seen fitting Chad Charming for his Cotillion outfit. He wonders if he should wear peacock feathers, but Evie reassures him that his kingly cape with fake fur suits him and Doug agrees. When Chad says that Audrey would like his cape, Evie agrees. Jay calls Chad for fencing practice and Evie takes the cape and Chad leaves. Doug shows Evie the large sum of money he's calculated on his computer from all the Cotillion outfits she's been preparing for everyone to Evie's delight. Doug tells her that she could finally buy the castle of her dreams in a few years, and they hold hands.
After Mal leaves for the Isle, Evie visits Ben in his office and tells him that Mal has left. She shows him the note Mal left for Ben along with her ring. Ben claims it was all his fault for not understanding Mal and yelling at her during their date. He tells Evie that he needs to go there to apologize to Mal, but Evie tells him he can't go alone since he doesn't know the Isle and that she needs to come also, to which he agrees. Evie says that she will also bring Jay and Carlos with them since they aren't popular back on the Isle, and it would be safer. She makes Ben promise that she won't get stuck on the Isle again. She designs a VK outfit for Ben to wear on the Isle.
Evie, the rest of the Core Four, and Ben hurry to the limousine to travel to the Isle. Evie adjusts Ben's beanie before they all get in the limo and leave the talking Dude behind. Once in the Isle, they hide the limousine and walk through the streets. Two kids run up behind Evie and take her wallet. She grabs the kid who took it, but feels sympathy for them and lets them have it. Ben wanders off and tries to shake hands with a stranger before Evie, Carlos, and Jay pull him away. They tell him how to behave on the Isle as they walk around (Chillin' Like a Villain). Ben runs into Gil who recognizes him, Mal, Evie, Carlos, and Jay and they run away. The group then arrives at the hideout where Mal is staying at and opens the entrance by throwing a rock at the sign attached to the building. Evie wishes Ben good luck as he climbs the stairs alone to apologize to Mal.
Ben later returns to the group, who are waiting at the end of the staircase. He tells them that Mal rejected him and that she doesn't want to come back to Auradon and walks away. Evie communicates with Mal by speaking through an object resembling an ear trumpet attached to the wall, asking her to talk. Mal shouts back at her to go away. The group realizes that Ben is nowhere to be seen, and Harry Hook shows up. Harry tells them that they captured Ben and demands that Mal meet Uma at Ursula's Fish and Chips alone if they want to see him again. Evie holds Jay back as he tries to attack Harry and Harry walks away.
Evie, Jay, and Carlos tell Mal what happened to Ben and Mal blames them for bringing him there. Mal tells them that she's going to Uma and getting Ben back alone, to which the rest protest. In the end, Evie, Carlos, and Jay stay back to wait for Mal as Mal leaves to meet Uma. Mal comes back and tells the rest that Uma wants the Fairy Godmother's wand in exchange for Ben. Evie exclaims that they can't let Uma destroy Auradon. Mal remembers Carlos' 3D printer, which they can use to create a phony wand to trick Uma. They decide that smoke bombs would be a diversion as they escape with Ben. Evie compliments Mal's hair.
When Carlos and Jay leave for Auradon to use the 3D printer, Mal and Evie surprise Dizzy Tremaine, who was extremely close to Evie back on the Isle, at Lady Tremaine's Curl Up & Dye. She's elated to see Evie again, and asked whether their fantasies about Auradon were true. Dizzy then shows Evie her old sketchbook that she saved, and Evie reminisces over her old designs. Evie and Mal create five smoke bombs in the shop. Dizzy gives Evie some of her accessories and items as gifts and they hug. Evie tells Dizzy that she wishes Dizzy could come back with her. Mal and Evie then leave the shop. Outside the shop, Evie asks Mal if she wanted to talk about Ben. Mal tells Evie that she can't go back to Auradon. When Evie says that she will stay with Mal, Mal refuses, telling Evie that she belongs in Auradon. They enter their hideout building and sing about their relationship between the two different worlds (Space Between).
Mal and Evie meet up with Jay and Carlos, who also brought along Lonnie, Dude, and the fake wand. The group arrive at Uma's pirate ship and meet her and her pirate crew. They argue over the wand and Ben (It's Goin' Down). Mal starts to hand over the wand, but Uma is suspicious and tells her to give it a test drive first to see if it's real. Mal sees Dude and pretends to spell him into talking, although she knows that Dude already has the ability to talk. Dude talks, proving that the wand works (when in reality, it doesn't). Uma demands the wand, but Mal demands Ben first. Ben is cut loose and they exchange him and the wand. Mal, Ben, Evie, Jay, Carlos, and Lonnie try to make a hasty retreat before Uma finds out that the wand is fake. Uma attempts to destroy the barrier with the wand, but nothing happens and she realizes that the wand is a fake. The pirates try to attack the group, but they throw smoke bombs that cloud their vision. The group grabs swords and they begin to fight the pirates. Evie squares off against a pirate, who she overpowers by stepping on his foot. She overpowers another pirate and takes his scarf, then fights more pirates while back-to-back with Ben. Evie throws the last smoke bomb, cutting off the pirates and allowing the rest of the group to escape to the limousine. Mal left her spell book back at the Isle.
Evie and the others arrived back at Auradon Prep. Evie drags Mal off to go talk, but Carlos stops them, saying they should talk together. They sit down together and Mal talks about the stress and pressure she's been feeling as she's torn between two worlds. They all accept their Isle origins as a part of them. Evie says that she'll make changes to Mal's Cotillion dress and that she can wear it only if she wants to. Later, Doug visits Evie and asks why she went camping without him (he was lied to when he asked Carlos where Evie was) if she was seeing anyone else. Evie explained the situation to him and they deliver the Cotillion dresses.
At Cotillion, Evie poses for the photographers and references Dizzy as the creator of her hair barrette to a reporter on television. Evie and Doug look on as Mal is introduced at Cotillion. Evie comforts a nervous Mal while Ben is introduced. Uma comes out behind Ben claims that they fell in love while on the Isle and Uma thanks Mal while Evie watches. Ben and Uma dance together and Evie pulls Mal back. Evie starts to leave the party with her friends, but Jane unveils Ben's gift to Mal: a stained-glass masterpiece, revealing that Ben loved Mal for who she was. After that, Doug loved her so much, You won’t believe your eyes.
Mal realizes that Ben is spelled and tells Evie. Mal kisses him, which breaks the spell, and Uma jumps over into the water and transforms into a sea witch. She begins to attack the ship, along with Evie and the rest of the crowd and Mal transforms into a dragon and faces off against Uma. Ben dives into the water between them and tries to create peace. Uma has a change of heart, leaving the ring behind and disappearing into the water. Ben climbs back aboard and Mal transforms back into a human. Evie leads Mal to Ben and they kiss again. Evie asks Ben if Dizzy could come to Auradon, to which he enthusiastically agrees. Evie tells him that she will compose a list of kids that should come to Auradon, realizing that they haven't been given a chance. With that, Evie and the rest of the guests at Cotillion dance into the night (You and Me).
Evie is castle-schooled in a castle far across the isle by her own mother, Evil Queen, because they were both banished and cursed by Maleficent after her daughter Mal was not invited to Evie's sixth birthday party. When Evie becomes a teenager, she finally leaves the castle to attend an evil school named Dragon Hall where she meets her first friend, Carlos. However, she becomes Mal's target for an Ultimate Scheme project and gets locked inside Cruella De Vil's fur closet, which is so full of bear traps that she barely even survives the ordeal. After meeting up with Carlos again, she helps Carlos with his invention about the machine that would pick up TV and the radio signals from outside the dome, but it results in making a hole in the dome for a whole minute. Because of her part in the discovery, Evie is forced to join Mal on recovering Maleficent's staff, which had gained back the magic from Carlos's machine. Once inside Maleficent's fortress, Evie is almost cursed to go to sleep for a thousand years, but Mal saves her by touching Maleficent's staff first. Afterward, Mal makes amends with Evie and the two of them become friends. She also gives Carlos his first pillow.
- Due to Snow White's relationship with her stepmother ending on the death of her father, she and Evie have no relation. This would make Evie merely Snow White's stepmother's daughter; stepsister in simpler vernacular.
- According to Audrey, since the Evil Queen has no royal status in Auradon, Evie isn't really considered a princess. However, this wouldn't be true because the Evil Queen was married into royalty.
- According to Evie, her mother taught her how to apply blush before she could talk, and to always use 'upward strokes'. Considering her mother's vain nature, it's quite likely the truth.
- Evie is dating Doug, who she calls the Prince of Her Heart.
- She is ironically good at things that a princess would never need to learn - sewing, cooking, and cleaning. Evie even tells Chad, that this makes her similar to his mother, Cinderella. According to the novel Disney Descendants: School of Secrets she is in the sewing club.
- Evie carries a bag that resembles the box seen in the film Snow White and the Seven Dwarfs, which was given to the Huntsman by the Evil Queen to have to contain Snow White's heart, as proof that she was dead.
- Evie's mother doesn't really seem to care about her at all, and only seems to care about her beauty and whether she'll marry a prince or not.
- Sofia Carson wore a wig during filming. However, some of her real hair shows; two instances are when she spins in the science class and showing Doug the results of her test.
- Sofia Carson narrated the audiobook "Isle of the Lost."
- At the time of the first film, she is sixteen years old. By the time of the third film, she is likely seventeen years old.
- Evie's mother is constantly telling her that she is not pretty enough.
- Likely thanks to having an obsession with her mother's spellbook, Evie is quite good at chemistry.
- As the movie goes on, in continuation of the wardrobe changes, Evie's clothes begin to resemble Snow White more and more.
- The prelude novel reveals some details about her past:
- Evie was castle-schooled due to a curse Maleficent put on her and her mother for not inviting Mal to her sixth birthday party.
- She used to be enemies with Mal before they became best friends. Mal once locked her in Cruella De Vil's coat closet as revenge for the birthday party.
- She attended Dragon Hall (an evil high school).
- Evie was Carlos's first real friend.
- She had a parrot sidekick named Othello (Iago's descendant). According to her, Othello has quite a mouth on him (meaning the use of swear words), often wondering where he learned such things.
- Evie gave Carlos his first pillow.
- In Descendants: Wicked World, she isn't wearing her fingerless gloves with her Isle of the Lost outfit. This also applies to her artwork for the game Descendants: Isle of the Lost Rush.
- In the Disney's Descendants Yearbook, her "Secret Wish" is to ace chemistry, while her "Not-so-secret Wish" is to live in a giant castle with lots of mirrors and a gorgeous prince who loves her.
- It's also revealed that she wants to be a fashion designer or a scientist when she grows up.
- Her favorite class is chemistry, stating that she is great at it and that it makes her shine.
- Her Go-To Object at the museum is King Beast's mystical rose, stating that it's really beautiful.
- It is revealed in the book that she can even make the most horrible, wicked smile.
- Like Giselle from Enchanted, she is revealed to have the traits of a classical Disney Princess.
- In Return to the Isle of the Lost, Evie admits to being a witch and therefore knows all the potions.
- In Descendants 2, Evie's hair goes from a dark blue to a teal-like blue. This can symbolize her full change to goodness during the six-month time jump.
- According to Doug, Evie would probably hate camping.
- She made all the dresses for the girls at the Cotillion in Descendants 2.
- She also made Chad's cape for Cotillion.
- She gave up her magic mirror to the museum in Rise of the Isle of the Lost.
- She and Dizzy are like sisters due to their close relationship.