Gran Hermano 12 launched on October 17, 2010 and ended on March 10, 2011, making it the longest season of Gran Hermano to date, just lasting a day longer than the previous series. It took place after Gran Hermano All Stars. This is the twelfth Spanish edition of the reality franchise Big Brother. The main show which consists of nominations and evictions are known as the Gala and El Debate, a weekly spin-off show, where recently evicted housemates will return. The tag line for this edition is La Cuarta Dimensión (The fourth dimension). The grand prize this season is €300,000.
In the 2015 season "Gran Hermano VIP 3", Chari returned to the house.
In the 2016 season "Gran Hermano VIP 4", Laura returned to the house.
Casting for potential Gran Hermano 12 housemates started during the last weeks of Gran Hermano 11. Casting calls were held during the summer of 2010 in cities all over Spain. The casting via phone line closed on August 2010 and on October 1, 2010 producers revealed that 40 people were already in the final phase of the casting process.
Twenty housemates entered the Gran Hermano house. They were split in two different houses, White house (House 1) and Color house (House 2). 9 women entered the color house and 9 men entered the white house. Rubén and Chari were ex, she entered the white house and Rubén entered the color house. All housemates had to get know each other by blind dates and after that chose their favourites or less favourites. On Day 5, women from color house chose their 4 favorite men from white house. Men from white house chose their 4 less favourite women from color house. Chari and Rubén's secret were discovered so they had to change house. On Day 47, the house was unified. On Day 82, five ex-housemates, Chari, Mireia, Oscar, Ruben, and Yago, returned to the Color House after an online public vote; a second round of online public voting on Day 89 decided for Ruben and Yago to officially return to the Gran Hermano house as official housemates; the other three housemates were re-evicted.
Anup Naraim is a male housemate from Bombay, India. He was the first Indian in Big Brother Spain. He entered on Day 1 into the white house. He loves to clean the house. He was considered by his peers as a traitor, as he was in one group to another to avoid being nominated. He has had disputes with Julia, Jhota, Terry, and Laura. After facing the public vote five times, he was finally evicted on Day 82.