The ninth season of Calle 7, a Chilean reality program, began on April 2, 2012, new contestants were introduced and some former participants returned.
The teams, yellow and red, were divided into new and old contestants, respectively.
Juan Carlos Palma and Federico Koch, known contestants who had previously left the competition, joined the yellow team (the new participants' team).
Fernanda Gallardo, who competed in seasons five and six, joined the red team (the known contestants' team).
Like the first two seasons, the system of the competition is individual.