Adrien Agreste is one of the main protagonists of Miraculous: Tales of Ladybug & Cat Noir. He is a student in Miss Bustier's class at Collège Françoise Dupont in Paris, France. He is also a fashion model for his father's brand. With the Cat Miraculous, when it is inhabited by Plagg, Adrien transforms into the superhero Cat Noir ("Chat Noir" in the French version), gaining the power of bad luck and destruction to stop Hawk Moth and his akumatized villains. He is also the second-in-command of the French Miraculous superhero team.
In "Reflekdoll", Adrien temporarily obtains the Ladybug Miraculous, which when inhabited by Tikki, will be able to transform him into Mister Bug, gaining the power of good luck and creation.
In "Desperada", Adrien temporarily obtains the Snake Miraculous, which when inhabited by Sass, will be able to transform him into Aspik, gaining the ability to go back in time for a Second Chance.
In "Cat Blanc", in an alternative future, Adrien, conflicted between his loyalty towards his mother and the girl he loved, is akumatized by Hawk Moth into Cat Blanc, a cat-themed supervillain with the power of infinite destruction.
In "Miracle Queen," after removing the Snake Miraculous from Viperion under Miracle Queen's control, Adrien wears the Snake Miraculous combined with the Cat, to become Snake Noir.
For more info, go to https://miraculousladybug.fandom.com/wiki/Adrien_Agreste