The most popular girl and a queen bee at Elite Way School, she comes from a wealthy and privileged family who lives in Mexico City.
Mía starts RBD with her boyfriend Miguel and their friends Roberta, Diego, Giovanni, and Lupita, and acts as a songwriter for the band.
They start dating and declare their love for each other, with Miguel growing increasingly divided between going through with his plans and letting go of his past and moving on with Mía.
In truth, Miguel got drunk and fell asleep; Sabrina snuck into his bed barely clothed and when he woke up told him they had sex.
Marina left her husband and toddler Mía because she was an addict, now she has recovered from her issues, she's back and wants a relationship with her daughter.
She's the co-female lead of RBD along with Lupita and Mia, with whom she at first has a difficult and conflicted relationship (Roberta thinks Mía's too ditzy, dumb and shallow).
In season one, Roberta leaves against her will for a month in Spain with her adoptive father and is angry at herself when she spends a lot of time thinking about Diego.
Javier actually helps León keep Diego away from Roberta, although he claims he wants to date her only to break her heart since she publicly humiliated him by turning him down.
He is originally from Monterrey, Nuevo León (Mexico) which is where his mother and younger sister live in, but he can never afford to visit because his family is not very wealthy.
Towards the end of the first season, Diego falls, hitting his head, and pretends not to remember Roberta so that he can go out with her and win the bet he made with Tomas.
Lupita is sweet and quiet, but she has a complicated relationship with family and puts too much pressure on herself because of her scholarship and because she doesn't want to disappoint her aunt.
Although he is good at heart, some rich classmates consider him a sellout, which splits Giovanni between his devotion to one woman and his fixation for expensive gifts.
But in spite of all that he continues going to school, and he is doing good with his personal life, family, friends, girls, fun activities, and as a member of RBD.
He was also a member of "La Logia" (a secret society within the school hell-bent on getting scholarship students kicked out), until he betrays them to save Teo.
In the second season, she joins the equally malicious Sol de la Riva, along with Raquel and Michelle, in a group called "Top Girls."
However, in season three, due to the Gandías' divorce and her relationship with Tomas, she comes to her senses and begins to socialize a bit more, eventually becoming closer to her classmates.
Jana is one of the new students in the EWS (acronym for Elite Way School) Beautiful and sexy, she gets a lot of attention from students of Elite Way School and makes a very attractive impression, which first makes her a threat to Mia's popularity, but her cynical and deceptive personality quickly gets people to dislike her.
She is willing to ruin people's lives without regard of their personal feelings and does so via a multitude of convincing lies (although most of the time her plans tend to backfire).
She acts like they're friends until the La Gran Final when she makes out with Iñaki right in front of Giovanni and Lola and is with Inaki.
In the second season, his mother gets admitted into a mental institution after having a breakdown regarding her elder son's death (she blames this on Teo).
After, he starts socialising more and becomes good friends with Leornando, but there friendship is cut short when Leonardo moves away to play soccer.
Enrique (Ethics professor) goes on sees Joaquin at a rehabilitation centre and it is revealed he constantly gets involved with drugs because of his fathers neglect.
Pilar has a hard time with him leaving the school and then has the doubt that she might be pregnant with his baby, but it is revealed she isn't when the pregnancy test comes out negative.
In season 1, Franco dates a lawyer from his past named Valeria Oliver, the women he was set to marry before he left her for Marina, Mia's mother.
Even though he tries to be an imposing authority figure, he comes out more as a dim-witted principal who is easily manipulated not only by his superiors, but also by the same students he wants to control.
His past was just as obscure as Esteban's, as indicated by further investigations made by Jose Lujan, whom Gaston likes to downgrade and humiliate at any given chance.
In reality, Gaston's father (Ricardo Sisniega) took care of Jose Lujan when she was a dirty street orphan because she had saved his life (although how she did so is still unknown).
Hilda has devoted her entire life to teaching, but had a romance in her youth with Professor Hilario (played by Héctor Gómez).
Eventually, he was framed by Santos (Derrick James) and fired on the charge of child pornography (he had inappropriate pictures of Sol).
The biological mother of Mia who was often portrayed as faceless character who lived in New York as fashion designer having her face always covered by a sculpture, in the 1st half of the show.