The only daughter of a prominent industrialist, and one of the participants in the Contest who represents Gallogher University. Very intelligent, she finished high school at 16 and got her psychology degree with highest honors by the time she was 21. At the time of the contest she's finishing a doctorate in criminal forensic pathology. She's a "connoisseur" of forensics cases.

She's also very good at persuading/manipulating people to achieve her goals and thanks to this ability was able to convice the other students in the university to agree to take a secret test to rule most of the students out of participating in the competition.

He's the younger son of Juan Carlos Velasco, an official of the state police and mayor of one of the dependencies on the outskirts fo the city of Mendoza. His father managed to make him go to university rather than follow in his footsteps and enter the police force.

He's a sociologist and has a degree in philosophy. He's old fashioned in that he still sticks to books and papers, and doesn't do as much with computers and technology. He's different from all the other competitors in the contest because of his humble beginnings. He's reserved and restrained, but observes everything, though he keeps his impressions to himself.

Matías is into extreme sports and surprises his friends with his risky activities (skiing, skydiving, etc.). He's strongly attracted to Renata, but neither of them realizes it.

The oldest of four daughters of a communications mogul. Her father made her study engineering so that she can continue the company. She alternates her proficiency for the maths and sciences with her passion for literature. She's very trusting. She's reserved, quiet and timid, and she channels all this anxiety through food: she's seriously bulimic.

Despite being admired by the boys for her great looks, Irina has hardly had any boyfriends and prizes her virginity, which she's saving for marriage. She's secretly in love with Mateo, though she knows her feelings aren't reciprocated.
Her participation in the game makes her feel very conflicted; whenever she feels she's done wrong, she runs to the school's chapel to confess and spend hours saying the rosary. She's the first who'll want to leave this macabre game and, therefore, the one who's in the most danger.

Of the four Gallogher University students participating in the contest, the top candidates are Renata, and Mateo, the son of the Minister of Public Health.

Raised in luxury, but devoid of sincere feelings, Mateo is a lawyer and is finishing his doctorate in International Public Rights. He speaks and writes English, French, Japanese, Italian, and Russian perfectly, and is a conneoisseur of the Eastern culture; he's the South American champion in aikido.

He's both fascinated by and envious of Renata; she's the only person he considers his equal (this doesn't come across to Renata, who feels she's on top of the world). He's secretly enamored with her.

Lucas is the only son of a renowned sociologist who is also a graduate professor in the university. Lucas is a young prodigy and a bright teenager, one of the young, promising stars of the school.

Behind his fragile aspect, his childishness, lack of interest in sex, and studiousness, Lucas is the mastermind who draws up the group's strategies. He's the one person with the confidence that he'll make it to the end without any major problems. He accepts the "game" that Renata proposes purely for fun, and often, he'll tend to take the limits of the "game" to more dangerous territory.

Julieta Zylberberg
her role is that of a student who's "phobic and has problems."

Analía Couceyro