Adrien Agreste

Adrien Agreste is the deuteragonist of Miraculous: Tales of Ladybug & Cat Noir. He is a student who attends the same school as Marinette Cheng. 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), the sidekick of Ladybug.

The person who will voice Adrien in the French version hasn't been revealed (though he was shown in a photo), but in the English dubbed version, Adrien will be voiced by Bryce Papenbrook.

Appearance
Adrien is a bit taller than Marinette, and he has brushed-back blonde 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 the black-colored ring that he uses to transform into Cat Noir. Additionally, he wears dark blue jeans and red sneakers with white lace.

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 at the end, and boots. He has black cat ears and a black mask covering part of his face. His eyes, including the sclera, are green, and his hair is messier and untamed. His black ring gains a green circle with a black paw print.

Personality
Adrien is charismatic, along with being shy and a bit reserved. As Cat Noir, Adrien lets his wilder side come out, being cocky and outgoing. In his attempts to get Ladybug's attention, he brags and boasts about himself.

Marinette Cheng/Ladybug
Adrien doesn't seem to care much about Marinette.

However, he is infatuated with Ladybug, often trying to impress her and win her affection. He tends to lose his self-confidence around her.

Plagg
Plagg, a cat-like kwami, helps Adrien transform into Cat Noir.

Nino
Nino is Adrien's best friend.

Chloe
Although having known Chloe when he was younger and being friends with her, Adrien still recognizes her as being rude toward others and doesn't seem very interested in her affection towards him.

Trivia

 * 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 OAV version had in fact been called Felix, and Felix and Adrien are not the same characters.
 * Adrien's appearance changed immensely from Felix's design (seen in the Ladybug OAV) to his own design. Felix's design included more formal clothing with black and gray colors, blue eyes, and a tidier hairstyle.
 * Their personalities are also different. Felix is less social, not openly friendly, and not kind to Marinette.
 * The name Chat Noir is literally French for Black Cat. This is due to the series' French origins. However, some sources have called Chat Noir "Black Cat" instead. In the English dubbed version, his name is Cat Noir.