07 January 2015 :: The Challenger’s of Bigg boss season 8 are :
* Rahul Mahajan
Rahul Mahajan is an ex-contestant from Bigg Boss season 2. He married current contestant Dimpy in 2009 but both have recently filed for divorce. Rahul was disqualified in season 2 for attempting to run away from the House but in Halla Bol he plans to stay with full fervor!
* Sambhavna Seth
Sambhavna is a fun loving person and extremely loving and emotional until provoked to a level where she claims she can even beat up a person for creating nuisance. She’s coming all prepared to give a tough challenge in Bigg Boss Halla Bol!
* Mehek Chahal
Mehek Chahal is a Bollywood actress who was a contestant in Bigg Boss season 5. A realistic by nature, Mahek is a no-nonsense girl and has her eyes set on presenting a tough challenge to the Top 5 Champions in Bigg Boss Halla Bol
* Ajaz Khan
He is an entertainer and a very interesting character. He loves to gossip and party all the time. He thinks he is a superstar .
* Sana Khaan
Sana Khaan is a popular Tollywood actress who was born and brought up in Mumbai. She worked as model in Mumbai, appearing in more than 30 ad films alongside the likes of Shahrukh Khan and Akshay Kumar. She later on, appeared in item numbers in films such as Bombay to Goa and Dhan Dhana Dhan Goal, before she was signed in 2008 do to the lead female role in the Tamil film Silambattam opposite Silambarasan, who approached and offered her the role. Playing a talkative, tomboyish brahmin village girl in the film, she won rave reviews for her performance as Jaanu and the ITFA Best New Actress Award in Singapore. Subsequently, she has been signed to do two more Tamil films, Thambikku Indha Ooru with Bharath, Aayiram Vilakku with Shanthnoo Bhagyarajand “Payanam” with Prakash Raj, Nagarjuna, Rishi and others. Post her successful stint in Bigg Boss season 6 Sanaa is returning to the house as one of the Challengers in Bigg Boss Halla Bol
Source : http://colors.in.com/in/biggboss/