Juleka Couffaine is a student in Miss Bustier's class at Collège Françoise Dupont. In "Reflekta", after being locked in the bathroom by Sabrina Raincomprix (under the orders from Chloé Bourgeois) to prevent Juleka from participating in the class photo, she is infected with an akuma by Hawk Moth and becomes Reflekta, a supervillain who turns people into copies of herself.
Juleka is a very pretty girl with tailbone-length black hair that has violet tips at the end of her hair with bangs covering the left side her of her face and cooper eyes. She wears a pale lavender lipstick and her fingernails are painted grey with black nail art of intricate patterns on each one with different designs on each hand. She also stands at a medium height.
Juleka wears a black shirt with a swan-necked collar and sea green lined collar and side pockets, a black lace short sleeves. On her hands, she has black fingerless lace gloves that have a diamond pattern design and end halfway up the forearm. She also wears purple pants with holes above the knees and black high top sneakers with white soles.
Reflekta's face is white and she has hot pink circle markings around her eyes, along with purple lipstick. On the tips of her eyelashes, there are small light green spheres. Her hair is shiny and pink with light purple stripes, and two twisted ponytails stick upward on each side of her head. She has side bangs, and at the center of the front of her hair, there is a white upward almond-shaped eye with a light purple outline and a pink pupil. She wears a pink dress with a collaret, light purple stripes around her waist, and eyes like the one on her hair around her puffed sleeves and her skirt. The tips of the collaret and the skirt have light pink edging, and her arms and legs have pink gloves and leggings. Her long green fingernails stick out of the end of her gloves, and on the back of her right hand, she has a pink eye design with a black outline, the center being a black jewel that opens up to reveal a small circular mirror. At the bottom of her feet, she has pink thick high heels and miniature eyes without pupils appear above the feet. And, her eyes remain cooper.
Juleka is very timid. She doesn't speak as often as the rest of her classmates, and when she does it is often in a self-conscious mumble. She is rarely particularly expressive, though she will be in some cases, including calling out being through with Kim's "stupid dares" in "Timebreaker". She seems to like scary things, or be unafraid of such, as she is the only student to not fear Horrificator, calling her "awesome" in the episode of the same name. Because of her quiet nature, Juleka feels like no one ever notices her and forgets she is around, but she is aware that there are people that care about her, to whom she expresses compassion and gentleness.
As Reflekta, she is proud and vengeful. Because no one ever paid attention to her, she wants everyone to look like her so that she will never be unnoticed again. In particular, she wants to transform Chloé because she prevented her from being in the class photo. Without a second thought, she even transforms people who are nice to her and notice her, including Rose. She is quite vain, constantly telling everyone that they will look better once they look like her and reassures them that they look amazing once they are transformed. Due to this arrogance, she believes her victims like their new looks, when they clearly do not. She is cunning as well, figuring out Ladybug's plan to catch her and persuading a transformed André Bourgeois that she'll turn him back to normal if he tricks Ladybug and Cat Noir into believing he is her.
As a civilian
Reflekta is able to shoot rays from the jewel she has on her right wrist, which transforms people into an identical physical copy of herself. Those transformed by her retain their normal voices and minds but do not have her powers or their own abilities, and they are immune to subsequent hits from her ray. She is implied to be able to reverse the transformations as well, as she says to Hawk Moth that she will take care of getting Cat Noir's ring after getting the Ladybug Miraculous, despite having transformed him, and she promises André that she'll turn him back to normal in exchange for his cooperation.
She also seems to be able to float, as seen when she jumps around, and she is very strong and fast, quickly throwing multiple lockers in front of a door in the span of a couple of seconds and breaking free from a basketball hoop around her body.
= Gender Unknown
Juleka is best friends with Rose, and Juleka cares about her. While the quieter of the two, Juleka enjoys listening to Rose, like when Rose is gushing about Prince Ali in "Princess Fragrance", and she will speak up for her when it's definitely needed, complimenting Rose's notebook and Rose herself in "The Notebook". She doesn't believe Rose about breaking her photo curse in "Reflekta", and after being locked out of the photo, she sadly tells Rose to forget about her before running away. But later, after Rose and Marinette prove her wrong about the curse, Juleka is deeply happy about it.
In "Zombizou", Juleka is seen cuddling and comforting Rose after her close call with Zombizou's minions; the two are even holding hands and even share a hug after they are returned to normal. In "Reverser", they both are a part of the same Art Club. In "Catalyst", Juleka was shocked when Rose was reakumatized.
A friend to Marinette, Juleka likes her and her kindness. In "Darkblade", Juleka supports Marinette's run as class representative and mumbles an incomprehensible request she would like if Marinette wins. After countless times of bad photos for Juleka, Marinette helps her break the pattern in "Reflekta", even after Chloé ruins Juleka's attempt to be in the class photo. Getting good pictures of herself and her friends with her at the Place des Vosges, Juleka graciously thanks Marinette for helping her.
In "Befana", Juleka finds Marinette cool as she works with her friends to defend her. In "Gigantitan", Juleka like the others already know that Marinette has a crush on Adrien and approves of it. She works with her friends to help Marinette plan a date with Adrien but when Marinette turns Adrien's offer down, Juleka has confidence in her friend that she'll get there someday.
With Ladybug, Juleka is grateful for the superhero and believes in her ability to save the day with Cat Noir. In "Gigantitan", she even works with Alya and the others to help Ladybug get out of the villain's grip. As Reflekta, she isn't pleased with Ladybug's interference with her plans, and she works to keep one step ahead of her schemes.
Alya is another one of Juleka's friends. She, Alya, and Marinette work together to cheer up Rose after Chloé upsets her in "The Notebook". She also agrees to Alya's plan for them and Rose to help Marinette and her parents finish their large order of macaroons in "Busy Day".
As friends Juleka enjoys hanging out with Alya seen in "Gigantitan" where she helped Alya plan a date between Adrien and Marinette. In "Syren", they spend time with their friends at the movies and pose as extras in Clara's video in "Frightningale".
Juleka dislikes Chloé and her rudeness towards everyone. Because Chloé prevents her from being in the class photo, Juleka falls into despair and cries, lamenting that she'll never be in a photo as long as Chloé finds a way to keep her out. Beyond that incident, Juleka is displeased with Chloé insulting Rose's notebook in "The Notebook".
During her time as Reflekta, she makes it one of her first objectives to punish Chloé by insulting her looks and transforming her into one of her replicas.
|Miraculous: Tales of Ladybug & Cat Noir Theme Song:||Appears|
|1. "The Bubbler":||Background||14. "Princess Fragrance":||Appears|
|2. "Mr. Pigeon":||Background||15. "Ladybug & Cat Noir":||Background|
|3. "Stormy Weather":||Absent||16. "Stoneheart":||Appears|
|4. "Timebreaker":||Appears||17. "Animan":||Absent|
|5. "Copycat":||Background||18. "Simon Says":||Absent|
|6. "The Pharaoh":||Absent||19. "Pixelator":||Background|
|7. "Lady Wifi":||Background||20. "Guitar Villain":||Absent|
|8. "The Evillustrator":||Background||21. "Kung Food":||Absent|
|9. "Rogercop":||Background||22. "Gamer":||Background|
|10. "Dark Cupid":||Background||23. "Reflekta":||Appears|
|11. "Horrificator":||Appears||24. "The Puppeteer":||Absent|
|12. "Darkblade":||Appears||25. "Antibug":||Background|
|13. "The Mime":||Background||26. "Volpina":||Background|
|Miraculous: Tales of Ladybug & Cat Noir Theme Song:||Appears|
|1. "Santa Claws":||Appears||14. "Frightningale":||Appears|
|2. "The Collector":||Appears||15. "Syren":||Background|
|3. "Prime Queen":||Absent||16. "Zombizou":||Appears|
|4. "Despair Bear":||Appears||17. "Frozer":||Appears|
|5. "Riposte":||Absent||18. "Style Queen":||Background|
|6. "Befana":||Appears||19. "Troublemaker":||Pictured|
|7. "Robostus":||Appears||20. "Queen Wasp":||Absent|
|8. "The Dark Owl":||Background||21. "Reverser":||Appears|
|9. "Gigantitan":||Appears||22. "Anansi":||Absent|
|10. "Glaciator":||Pictured||23. "Malediktator":||Background|
|11. "Sapotis":||Absent||24. "Sandboy":||Absent|
|12. "Gorizilla":||Appears||25. "Catalyst":||Appears|
|13. "Captain Hardrock":||Appears||26. "Mayura":||Appears|
|Miraculous: Tales of Ladybug & Cat Noir Theme Song:||Appears|
|1. "Chameleon":||Appears||14. "Startrain":||Unknown|
|2. "Weredad":||Absent||15. "Kwami Buster":||Unknown|
|3. "Christmaster":||Absent||16. "Feast":||Unknown||toy=Toy Version|
|4. "Backwarder":||Appears||17. "Gamer 2.0":||Unknown|
|5. "Stormy Weather 2":||Flashback||18. "Ikari Gozen":||Unknown|
|6. "Animaestro":||Unknown||19. "Timetagger":||Unknown|
|7. "Bakerix":||Unknown||20. "Party Crasher":||Unknown|
|8. "Onichan":||Unknown||21. "The Puppeteer 2":||Unknown|
|9. "Silencer":||Unknown||22. "Cat Blanc":||Unknown|
|10. "Reflektdoll":||Will Appear||23. "Félix":||Will Appear|
|11. "Miraculer":||Unknown||24. "Ladybug":||Unknown|
|12. "Oblivio":||Unknown||25. "Loveater":||Unknown|
|13. "Desperada":||Unknown||26. "Miracle Queen":||Unknown|
|"Marinette in Paris":||Background||"Marinette and Adrien":||Background|
|"Marinette and Fashion":||Background||"Master Fu":||Absent|
|"Ladybug as seen by Adrien":||Background||"Tikki":||Absent|
|"Adrien's Double Life":||Background||"Friends":||Appears|
|"Marinette and Alya":||Background||"Nino":||Background|
|"Marinette's Double Life":||Absent||"Max":||Background|
|"Cat Noir as seen by Marinette":||Absent||"Mylène":||Absent|
|"My Birthday Party":||Appears||"Rose":||Will Appear|
|Tales from Paris|
|1. "The Notebook":||Appears||4. "Busy Day":||Appears|
|2. "Inspiration":||Absent||5. "Homework Essay":||Absent|
|"Happy Birthday to You!":||Background||Miraculous Ladybug OVA:||Unknown|
Comics and books
|"Issue 1":||Absent||"Issue 5":||Appears|
|"Issue 2":||Appears||"Issue 6":||Unknown|
|"Issue 3":||Absent||"Issue 7":||Unknown|
|"Issue 4":||Absent||"Issue 8":||Unknown|
|Other Comics & Books|
|Ladybug Artbook:||Appears||Miraculous: Tales of Ladybug:||Unknown|
|Miraculous: Tales of Cat Noir:||Unknown||Tales of Miraculous:||Unknown|
|The Mini Menace Ladybug:||Absent||Ladybug PV:||Absent|
|First CGI promotional videos:||Absent||Korean musical:||Absent|
- In the Serbian dub, her name is changed to Julija.
- Her akumatized villain name, Reflekta, may be a reference to the Reflekta camera.
- Juleka's earlier concept design was different in many ways, including her shorter purple hair, black and white-striped leggings, and dark purple boots.
- She also owned a purple bass guitar with a pink strap.
- In "Mr. Pigeon", during the derby hat competition, Juleka and Rose are standing next to a derby hat with gears attached to it, suggesting one of them or both made the hat.
- In "The Evillustrator" she sits next to Nathaniel in science class instead of sitting next to Rose as she usually does.
- In "Copycat" and "Rogercop", Juleka is wearing white clothes instead of her usual dark gray clothes.
- She owns and sometimes wears a glove on her right hand with a small mirror or makeup compact attached to it, as seen in "Reflekta".
- In the theme song, Juleka's face is blocked by Nino Lahiffe's hand, foreshadowing the conflict in her episode "Reflekta".
- In "Reflekta", Juleka and Rose reveal that they think that Juleka has a curse that prevents her from looking nice in photos. At the end of the episode, they believe it's been broken thanks to Marinette Dupain-Cheng and their classmates.
- Juleka negates Cat Noir's Cataclysm with her powers by transforming him into her image, making his Miraculous disappear and preventing him from touching anything with Cataclysm.
- In "Reflekta," Juleka reveals she hates cats.
- While Luka has blue tips at the end of his hair, Juleka has purple tips at the end of her hair.
- All the Couffaines family members so far names end with "-ka".
- In Brazilian version, her name in some episodes is changed to "Juleika".
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