Alya Césaire

Alya Césaire is a student in Miss Bustier's class at Collège Françoise Dupont and Marinette Dupain-Cheng's best friend. She is also the sole admin of the Ladyblog and head of the school blog.

In "Lady Wifi", after Alya gets suspended from school because of Chloé Bourgeois, she gets akumatized by Hawk Moth and becomes Lady Wifi, a supervillain whose powers come from her smartphone and its Wi-Fi signal.

In "Sapotis", after she receives the Fox Miraculous from Ladybug, Alya, when the Miraculous is inhabited by Trixx, becomes Rena Rouge, a fox-themed superhero who helps Ladybug and Cat Noir "during particularly difficult missions" in the second season and beyond.

In "Mayura", during the fight with Scarlet Moth, Rena Rouge is akumatized into Rena Rage, a fox-themed supervillain.

In "Oblivio", Alya, alongside Nino, is akumatized into Oblivio, a memory-erasing supervillain.

Physical appearance
Alya is a Martiniquan Creole-French girl with the height of 5'5" and a curvaceous body. She has heart-shaped lips, hazel eyes, and a beauty mark above her right eyebrow. Her hair is wavy and reddish-brown ombre, growing slightly past her shoulders and having light copper-red tips.

Civilian attire
She wears black-rimmed glasses, with a white spot on each side. Her outfit consists of a white tank top underneath a short-sleeved plaid shirt with white, orange, and purple stripes; light blue jeans, and white sneakers with black tops. She wears a light berry-colored lipstick.

As Rena Rouge
When transformed, Rena Rouge's hair turns longer becomes a three-tone ombré, having the roots turn dark red/red-orange, blending to orange with the tips being white, and she wears her hair back into a high ponytail with an orange hairband. Her body is slimmer than her civilian form.The top layer of Rena Rouge's suit, akin to an overcoat, is orange with a white front, a black swan-necked collar, and black arms and gloves up to the middle of her upper arms. The overcoat layer attaches down the vertical front center with a zipper, and the Fox Miraculous becomes the zipper. The overcoat also has a long fox tail-like coattail that ends a bit below her knees at a sharp white tip. The bottom layer of her suit is orange with a white center on the front of the body and black legs starting at a point in the middle of her upper legs. She also wears black boots with orange soles and black fox paw print markings. Rena Rouge wears an orange mask with a white bottom half and a black mark above each eye. Two orange fox ears with white insides, black tips, and black edges are attached to the top of her head. She attaches her flute diagonally on her back when it's not being used.

As Lady Wifi
Lady Wifi has a black butterfly-shaped mask on her face, and her eyes are dark magenta. She wears a black suit, her lower arms, and legs white with three stripes that are white above each. On her chest is a glowing hot pink Wi-Fi symbol, and a thin white line goes around her waist, with the line creating a semicircle above a short vertical white line in the front, resembling a power button.

As Rena Rage
In "Mayura" Rena Rage has the same appearance as her superhero counterpart except for being red all over, owing to her having been taken over by a scarlet akuma. Her appearance resulting from a regular akuma is unknown.

As Oblivio
Oblivio is a purple silhouette that has a laser cannon in its left hand and wears a gray glove on its right hand.

Personality
Alya is rather energetic, passionate, and funny, confident, yet down to earth. Alya's foresight have come in handy many times. After Marinette thinks she accidentally lost a video of Ladybug on Alya's cellphone, she explains that she had already posted the video on her blog, mindful that something might go wrong when she showed her clumsy friend the video. When it comes to anything involving Ladybug and Cat Noir, she easily becomes very excited and basically has a single goal of updating her blog as soon as possible, such as when she is kidnapped by the Pharaoh to be a sacrifice yet still records herself and live streams the video on her blog. Sometimes, she goes too far, such as spying on Chloé's locker, which results in her getting punished by Mr. Damocles. Alya doesn't like being undermined or doubted by others, especially when it comes to her work. If someone points out something wrong to her, she is to stubborn to admit they are right. Though her research is generally right when she takes her time, Alya tends to jump to conclusions, like quickly suspecting Chloé of being Ladybug after seeing the girl with her own Ladybug suit and toy yo-yo and mistaking them for the real ones. She also has a habit of never checking her sources or doing ethical investigating of her blog posts, while demanding others to provide proof for their claims, even though she doesn't do that herself often. Alya is extremely loyal, supportive, helpful, and sometimes pushy, such as when she goes out of her way to encourage and (sometimes literally) push Marinette into spending time with Adrien. She is also very stubborn when it comes to doing things her way, such as the photo shoot of Marinette's fashion line. Another side to her is that she can be a bit demanding at times just as keeping Nino in line about revealing Marinette's crush on Adrien. Alya has a dramatic side to her personality, such as when she pretends to be a unicorn with Manon and later makes an excuse to Adrien's photographer, who asks her to be a support model for Adrien, so Marinette can do the modeling instead. Having to babysit her younger siblings at home, she is great with kids, though sometimes she pushes her responsibility of watching them on Marinette so she can go on dates with Nino. As described by Cat Noir in "The Pharaoh", Alya is a "brave chick," unafraid to get close to villains in her pursuit of the truth, tending to forget her safety at times and needing rescue by the very superheroes she is filming. As Ladybug, Marinette calls Alya bossy, feisty, and bold. Her bravery and determination has helped both civilians and superhéroes, such as when she makes a plan with her classmates to save Marinette and sacrifices herself in the process or rides a bike to distract the Gigantita from harming Ladybug, showing a more compassionate side towards her beloved ones in danger and great skills in leadership. Alya holds great admiration and respect for the two superheroes, especially Ladybug, wishing to know anything and everything about her. Much more, she wildly dreams of knowing Ladybug's identity, not once thinking about the consequences of posting the information on her blog, as Marinette pointed out to her in several episodes. However, she would respect her desire to keep it secret. Alya wishes to work alongside her, her dream coming true when the superheroine chooses her to wield the Fox Miraculous and asks her for her help in defeating Sapotis. She greatly values the trust Ladybug has in her, making her someone of her word above her burning desire to continue helping her teammates and thus giving her Miraculous back.

As Rena Rouge, Alya retains most of her personality traits such as her undying loyalty, trustworthiness, and curiosity. She is supportive of her allies, whom she gets very excited about working with, causing her to be a bit of a scatterbrain. A fast learner, she takes quickly to her abilities.

As Lady Wifi, her desire for answers increases considerably. Despising Ladybug's secrecy, she will stop at nothing to find out her secret identity, even if it means exposing a horrible person underneath, such as when she believes that Chloé is Ladybug. Her speediness to update onlookers remains the same, but her methods for finding info become sneakier and harsher.

As Oblivio, she wants nothing more than to erase the memories of everyone in Paris.

As a civilian
Alya is very tech-savvy, keeping up the school blog and Ladyblog with ease, uploading videos and streaming live recordings. She records with her cellphone and knows how to download videos from it. From her Instagram photos she is also quick with a camera taking many photos of Ladybug and Marinette without being noticed until the heroine spotted her first.

Aside from that skill, Alya is a very good writer, composing several articles for her blogs and penning the script for Nino's film in "Horrificator". Observant and a quick thinker, Alya has figured out a lot of things about Ladybug, Cat Noir, their Miraculouses, and the villains they fight from watching them. Even before becoming a regular superhero, she knew about their time limit and the akuma-corrupted objects. She quickly deduced that the kwamis are the power source of their powers. While not knowing that her best friend is Ladybug, Alya guessed correctly the identities of Carapace and Cat Noir, though is apparently not sure about the latter.

Likewise, Alya excels at presenting herself in her videos, explaining situations when needed and usually keeping her cool if the situation gets dangerous, as with the Pharaoh. Alya quickly developed great acrobation skills even in her civilian form, showing great synchronization with Nino while doing this. Alya showed the same coordination at dancing with him and she also is good at rapping.

As Rena Rouge
Rena Rouge has enhanced skills, such as speed, strength, and resistance. Her most prominent physical skill is agility, jumping to heights that Ladybug and Cat Noir cannot. Like a fox, she also enhanced senses such as hearing, smell and night vision. Rena Rouge uses her flute as her weapon, being able to use it to deflect attacks and throwing it with great precision.

Her special power, Mirage, is executed by playing her flute to produce an orange ball of energy at the far end of it. Wherever she throws the ball of energy, it creates a hyper-realistic illusion. However, the illusion disappears if it is touched. Although Mirage is handy to use, Rena Rouge must use it wisely, as she can only use it once before reverting to her civilian form five minutes after using it.

As Rena Rage
She retains the same ability as Rena Rouge, as well as the same weapon.

As Lady Wifi
A Wi-Fi signal gives Lady Wifi power, but if the signal is too weak or nonexistent, she loses her abilities. She uses her cellphone, which is the akumatized object, as her weapon. Swiping her phone, she can shoot out glowing pink icons, to wit: Lady Wifi is also able to dispel any of the currently in-use icons by crossing them off using her cellphone. Additionally, Lady Wifi can teleport herself using cell phones and antennas.
 * The pause and stop icons, which can freeze people.
 * The padlock icon, which can lock doors, and bind body parts to a surface.
 * The camera icon, which she uses to film and broadcast videos that she can project in the sky and on all available screens.
 * The fast forward icon, which acts like a hoverboard as a mode of transportation. This is first shown in "The Puppeteer".

Even without her phone abilities, Lady Wifi is skilled in hand-to-hand combat, easily being able to pin Cat Noir down on the ground. She is also shown to be remarkably strong, easily lifting an entire wooden chest and throwing it across the room at Ladybug.

As Oblivio
Oblivio has super strength and wields a laser cannon that can fire a blast of purple energy that causes whoever it hits to lose their memories.

Trivia

 * Alya's name is derived from the R&B singer Aaliyah, just as the rest of her family's names are references to jazz singers.
 * In Slavonic, "Alya" means "beautiful" or "scarlet," possibly a reference to her red-brown hair. In Arabic, "Alya" means "sky," "heaven," or "loftiness."
 * Her surname, Césaire, is a name variation of "Caesar", which translates to "hairy", akin to her large wavy hair.
 * In the Serbian dub, her name is changed to Ajla Sezar.
 * Old Mime Storyboard 4.jpge in the final product, Alya knew that Marinette was Ladybug in the early concept of the show.
 * In older concept art, Alya didn't wear glasses but instead wore sunglasses on top of her head.
 * Alya is the most recurring supporting character of the series, appearing in nearly every episode, alongside Marinette, Adrien, Hawk Moth, Tikki, and Plagg.
 * Likewise, Lady Wifi made the most appearances of any akumatized villain in the first season.
 * In "The Evillustrator", she reappears in Nathaniel's fantasy, teaming up with Stormy Weather to attack Marinette.
 * In "The Puppeteer", she makes her third appearance while being controlled by the titular villain.
 * Lady Wifi appears another time in "Gamer 2.0" for Gamer's powers.
 * A statue of Lady Wifi appears in the Musée Grévin in "The Puppeteer 2".
 * Her family comes from Martinique, which is possibly a reference to Aimé Césaire.
 * Despite that Alya was a new student in the current school year and didn't know any of the school's students beforehand, she says that Chloé may have been Class Representative since kindergarten in "Darkblade".
 * In Season 2 and later comics, Alya has more interactions with Nino.
 * News of Alya appearing as a superhero in an upcoming season was first released at Anime Expo 2016 during the Miraculous Ladybug panel.
 * Rena Rouge's identity was later revealed to be Alya at the Miraculous panel at New York Comic Con 2016.
 * It was confirmed again at the panel at San Diego Comic Con 2016, along with revealing her debut to be in Season 2.
 * Her superhero name was revealed at a TFOU press conference on August 31, 2017.
 * The final concept design of Rena Rouge was revealed at the New York Toy Fair 2017 as a preview for a fashion doll and action doll of her.
 * Alya's role as the future holder of the Fox Miraculous was foreshadowed in the second opening, in which she was shown with a fox emoji.
 * Alya is the first superhero to integrate Ladybug and Cat Noir's team, excluding themselves.
 * Alya is the first person to become an akumatized villain and a Miraculous holder, excluding Gabriel Agreste, who akumatized himself.
 * Rena Rouge means "Red Fox" in French, as Rena is short for renarde, which is French for "fox," and rouge is the French word for "red."
 * Alternatively, rena could also be referring to the word for "fox" in Haitian-Creole.
 * In the Italian dub, she is called Volpe Rossa which also means "Red Fox".
 * In the dub for Portugal, she is called "Fox Rouge" which, like Cat Noir, is a combination between the English "fox" and French "rouge" for "red".
 * According to a synopsis on Le Figaro, Master Wang Fu would call on Rena Rouge.
 * As revealed in "Syren", she still gets called on by Ladybug to be Rena Rouge from time to time, but she always gives back the Fox Miraculous when she is done.
 * Similar to Cat Noir, Rena Rouge's ears and tail are fake, but it is unknown if they respond to her mood and emotions, or if they can enhance senses.
 * Ladybug presents the Bee Miraculous to Alya in "Style Queen" but she is turned into a glitter statue before she can accept it.


 * Lady Wifi is the first villain that manages to remove a Miraculous from one of the heroes without making it disappear, as Cat Noir drops his ring when she throws him into a freezer. However, she is unaware of the success as she focuses on Ladybug at the time.
 * The next to do so was the titular villain in the episode, "The Dark Owl".
 * When Alya and Nino become Oblivio, their supervillain name is a pun on the word oblivion, which means, "the state of being unaware or unconscious of what is happening."
 * Alya has her own official Instagram account. You can find her under nick @alya.ladyblogger.
 * She mentions starting a bullet journal in one of her Instagram pictures.
 * Due to her dad's job at the zoo, on occasion, he lets Alya and her friends or family in after hours.
 * She doesn't only search for information about Ladybug and Cat Noir she also started looking for information on other Miraculous heroes.

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