Welshman Gareth Thomas has been appointed as the Lions skipper for the remainder of the New Zealand tour following Brian O'Driscoll's injury.
O'Driscoll's tour was abruptly ended by a dislocated shoulder barely a minute into the opening Test in Christchurch.
Boss Sir Clive Woodward said: "We are going to need big characters out there who can dig deep and show real fight and courage and Gareth has that.
"He is an outstanding player and a natural leader."
Thomas looked forward to a resurgence from his team following the dismal performance in the opening Test.
"This is a squad of great players with a lot of fight in them and we are going to put disappointment behind us and show the world what we are made of," he said.
"It is an unbelievable honour for me to be named captain for the rest of the tour, it was fantastic being chosen for the Lions' tour in the first place.
"To be captain is beyond any dreams I ever had as a kid.
"And the New Zealanders better understand I will be around a lot longer than a couple of minutes."
Thomas added that the squad were determined to win the series for O'Driscoll, whose tour was ended in controversial circumstances by what Woodward called a "double spear-tackle" from Keven Mealamu and All Blacks captain Tana Umaga.
The match citing commissioner ruled that the two players had no case to answer.
"The whole squad is devastated for Brian," Thomas said.
"He is a great player and a great bloke, and to lose him as our captain is a big blow.
"The fact that he was put out of the game in the way that he was will fire every single one of us to get out there and do better in the second and third Tests."