Thirteen female celebrities from various fields have been clubbed with a male participant each to compete in the show, which is an Indian version of internationally hit show "Fear Factor".
While former Indian women's cricket captain Anjum Chopra might prove to be tough competition, models like Diandra Soares and Alesia Raut will be raising the mercury levels on the show, along with Poonam Pandey, who created a stir in the media by vowing to strip for the Indian cricket team if they won the World Cup.
Actresses like Aarti Chhabria, Smita Bansal and Aashka Goradia, and item girls Sambhavna Seth and Kashmera Shah too will add their bit of spice to the show, which will be shot in Cape Town, South Africa, starting April 18.
Two VJs - Bani and Mia Uyeda - will also be seen in action, as will be singer Mauli Dave of "Sa Re Ga Ma Pa" fame and Dina Singh, whose only claim to fame is being actor Vindu Dara Singh's wife.
The 13 male participants have been randomly picked. Some like Ahran Chaudhary, Sangram Singh, Dhiraj Amonkar among others are models, while "Biggest Loser Jeetega" winner Sandeep Sachdev too will be seen on the show.
Though the prize money for the show is yet to be revealed, there is a golden opportunity for the male participant of the winning team of "Khatron Ke Khiladi 4".
"The male participant out of the winning pair will get the title of Thunderstar and he will get a chance to feature alongside Akshay Kumar in one of the commercials of Thums Up, which is one of the key sponsors of 'Khatron Ke Khiladi' this year, " Ashvini Yardi, programming head, Colors, told.
The show will go on air in May.