My 3:
Bear Grylls

A famous British guy, known for his immense knowledge of how to survive extreme conditions in any terrain (im sure some other countries may have seen the program he did with Will Ferrel). He's ex S.A.S, and actually trains new recruits for the S.A.S, so you know he's as tough as they come.
Derren Brown

A master of mathematics, deception and showmanship, he's the perfect candidate for the mind side of things in the 3 man team. Recently known for predicting the lottery numbers on live tv, and making a large percentage of viewers in his last show literally stick to their seat with a mind controlling video. (yes people, this is a real person)
Nikolay Valuev

A whopping 7 ft 2 in (2.18 m) monster, and if thats not enough he's also a proffesional heavyweight boxer. As tough as bear grylls is, there's probably a lot of stuff he can't handle on his own. That's where this monster comes in, if the mere sight of this man is not enough to chill a man to his boots then his fists certainly can. He has a reach of 85 inches.