Alya is an important supporting character in Miraculous Ladybug. She attends Collége Francoise Dupont alongside Marinette Dupain-Cheng and Adrien Agreste. She is a very close friend of Marinette, and a huge fan of Ladybug and Chat Noir, running a journal blog about them called the "Ladyblog". Alya also takes the identity of the hero Rena Rouge whenever she is needed by Ladybug, a fact she is very proud of. She is currently dating her friend and fellow classmate, Nino Lahiffe, who knows of her identity as Rena Rouge.
Alya is the first person to know that Marinette is Ladybug.
Sometime after Marinette tells Alya that she is Ladybug and allows Alya to keep the Fox Miraculous as a full time Miraculous holder, Alya changes her heroine costume changes and title to "Rena Furtive", so she can help her allies from the shadows.
