Adrien Agreste

Adrien Agreste is the deuteragonist of Miraculous: Tales of Ladybug & Cat Noir. He is a student at Collège Françoise Dupont and a fashion model. With his magical ring, inhabited by a kwami named Plagg, he has the power of bad luck and can transform into the superhero Cat Noir (Chat Noir in the French version).

Appearance
Adrien is a bit taller than Marinette, and he has brushed-back blond hair and green eyes.

He wears a white shirt, with a collar and rolled-up sleeves above his elbow, and a black shirt underneath with five horizontal stripes around the chest which are colored, from top to bottom, yellow, olive green, bright green, dark green, and periwinkle. On the ring finger of his right hand, he wears a silver-colored ring that he uses to transform into Cat Noir. Additionally, he wears dark blue jeans and orange sneakers with white lace and a logo of a black butterfly shape in a circle on the sides.

As Cat Noir, he wears a black leather suit with a golden bell on his chest. He has a long belt that hangs out like a cat's tail, gloves with claws on the fingertips, and boots. He has black cat ears and a black mask covering part of his face. His eyes, including the sclera, are green and look cat-like, and his hair is messier and untamed, covering his normal ears. His ring turns black and gains a green paw print in the circle.

Personality
Adrien is charismatic, along with being shy and a bit reserved. While liking to have fun, he is more serious, obedient, and less lively due to his strict upbringing. If something makes him sad, he tries to downplay his feelings on it, like his relationship with his father. He thinks reasonably, and he will express annoyance and frustration when someone is being difficult or something is going wrong. Though not very openly emotional or affectionate to most people, he is friendly and encouraging, and for those he is close to, he has an easier time letting his feelings show.

As Cat Noir, Adrien, having the freedom to act however he wants outside of his normal life, lets his wilder side come out, being cocky and outgoing. More optimistic and open, Cat Noir says whatever comes to his mind and makes a lot of jokes and puns, many being cat-related. In his attempts to get Ladybug's attention, along with other people, he brags and boasts about himself, but his change to his superhero status doesn't diminish his kindness and concern for others, among a lot of his other personality traits like irritation proneness and loyalty. While more prone to goofing off, Cat Noir gets serious when needed, like when fighting an akumatized villain. It's rare for him to reveal his vulnerable, Adrien-like side, but it does come through at times, such as quietly commenting that not all parents are loving during an episode and trying in vain to tell Ladybug about his love for her before their transformations wear off in "Cupid's Arrow". Determined to help others and save the day, Cat Noir really cherishes being a superhero and uninhibited by his civilian life.

Marinette Cheng/Ladybug
Adrien likes Marinette, although not personally close to her or aware of her feelings for him. He thinks she is a fantastic artist, and he winks at her occasionally. If she needs help, he gives it to her, and despite noticing how awkward she acts around him sometimes, he can tell that she is a good person. When, as Cat Noir, he teams up with Marinette to stop the Evillustrator in the episode of the same name, he flirts with her and promises to protect her. Afterwards, as Adrien, he asks her what she thinks of Cat Noir, and he figures by her jumbled response (which is her also trying to say he, Adrien, is cooler) that she thinks he is cool, not to his surprise.

However, he is infatuated with Ladybug, often trying to impress her and win her affection. He calls her "My Lady," and he flirts with her in hopes of wooing her. Whenever his flirtation clearly makes her uncomfortable, he does respect her wishes and stops. To his constant exasperation, she doesn't seem to reciprocate his feelings or thinks that he's just faking them. Occasionally, he loses his bravado around her, like during Valentines' Day after defeating Dark Cupid in "Cupid's Arrow". He longs to know who she is behind the mask, but he respects her desire not to let him know. As a team, they work well off each other, although Cat Noir sometimes feels like he has to do more of the dirty work than her because he doesn't have the ability to catch akumas. Sometimes they have disagreements, but they know how to work them out and defeat any villain causing trouble. Cat Noir is fully willing to sacrifice his life for her, shielding her from an attack on a couple of occasions. Dedicated to Ladybug, he hopes that someday, she'll understand how much he loves her and come to share the same feelings in return.

Plagg
Plagg helps Adrien transform into Cat Noir. Unlike Tikki, Plagg doesn't help Adrien much or usually does what he wants, and Adrien sometimes has to bribe him with cheese just to get him to help him transform. Adrien is often exasperated with Plagg's behavior and seems doubtful of Plagg's honesty, not believing him when Plagg says he didn't eat his phone. Even though he is often frustrated with Plagg, Adrien confides in him and appreciates what support he gets from him.

Hawk Moth
He is fully aware that Hawk Moth is the culprit for the akumas and supervillains, but it's unknown if he has ever officially met him. He always works hard to stop him, not wanting him to win by taking his Miraculous.

Gabriel Agreste
While loving his father, Adrien is disappointed in how little time he spends with him or how little love and attention he gives to him. Gabriel's aloofness and negligence hurts Adrien deeply, like when Gabriel doesn't attend his class's parent show and tell. He is very pleased whenever Gabriel does something for him, being grateful for the scarf from Gabriel (albeit actually being from Marinette) that he got for his birthday. He doesn't have a good relationship with his father, but as his response to the Bubbler's complaint about parents, he knows not all parents are like Gabriel.

Nathalie Sancoeur
Nathalie takes care of Adrien's needs, but her mostly serious nature towards him, not unlike his father, doesn't help him connect with her on any personal level.

Nino
Nino is Adrien's best friend. Adrien appreciates Nino's compassion and caring attitude. When Gabriel denies Nino's request for Adrien to have a birthday party, Adrien apologizes to Nino about his father. While shocked when he discovers Nino has become a supervillain, the Bubbler, Adrien is thankful for Nino wanting to make him happy, and he doesn't hold anything against him after he is changed back to normal.

Chloé Bourgeois
Although having known Chloé when he was younger, Adrien still recognizes her as being rude toward others and doesn't seem very interested in her affection towards him. When he learns from Nino that Alya thinks Chloé is Ladybug, Adrien is shocked, becoming relieved after Ladybug appears while he is watching Chloé, who is cosplaying as Ladybug.

Abilities
Adrien, as a model, knows how to pose and express for his photo shoots. He takes fencing, piano, and Chinese lessons.

As Cat Noir, he has enhanced skills, such as speed, agility, and strength. Like actual cats, he also has night vision. He uses his staff efficiently, knowing how to spin it, wield it like a sword, and take advantage of its duplication and length-changing features. His special power, Cataclysm, damages anything that he touches with his ring hand, although it drains his power and reverts him back to Adrien shortly afterwards.

Trivia

 * The name Chat Noir is literally French for Black Cat. This is due to the series' French origins. However, some sources have called Cat Noir "Black Cat" instead. In the English dubbed version, his name is Cat Noir.
 * In the Korean version, Adrien's superhero name is Black Cat.
 * Fans originally called him Felix, after a famous cat character. For some time, this name appeared on the original French version of Zagtoon's official website, but has since disappeared with newer equally reliable sources calling him Adrien.
 * It was later revealed that the Ladybug PV version had in fact been called Félix, and Félix and Adrien are not the same characters.
 * Adrien's appearance changed immensely from Félix's design (seen in the Ladybug PV) to his own design. Félix's design included more formal clothing with black and gray colors, light blueish-gray eyes, and a tidier hairstyle. As Cat Noir, Félix wears higher boots, doesn't have gloves, and doesn't have a staff for a weapon.
 * Their personalities are also different. Félix is less social, not openly friendly, and not kind to Marinette.
 * Unlike Félix, Adrien's ring can come off anytime. This is seen in an episode when he, as Cat Noir, gets knocked into a freezer and the impact causes his ring to fall off his finger, which makes him revert back to normal.
 * Adrien's cat ears are fake, in contrast to Félix's, whose cat ears are or act as real ones by moving up and down depending on his mood.
 * He is allergic to pigeons.
 * As Cat Noir, Adrien tends to move on all fours instead of running.
 * In the French version, Cat Noir calls Ladybug "Buginette."