Wales coach Steve Hansen has announced that the back row forward, who has led his country 10 times and made two Test appearances for the 2001 Lions, will be captain of the 30-man squad.
Flanker Martyn Williams, hooker Robin McBryde, outside half Stephen Jones and wing Gareth Thomas will be the squad vice-captains.
'I have got the best of both worlds,' said Hansen. 'The team have one person to look at for leadership and a clear direction about who is captain. And I have got the four vice-captains to share his duties, both on and off the field.
'Colin Charvis is a man of great rugby quality, he wants it and feels comfortable doing it. He is one of the most experienced members of the squad and in a campaign like the World Cup we want the most experienced person doing the job.
'He is a world class player, his leadership qualities were outstanding in South Africa and everyone is behind him.'
GB7s women left their England base to train in Wales this week. Olympic Games hopeful Rachael Burford gives WRU TV's Graeme Gillespie her thoughts on Welsh teammate Jasmine Joyce - a 'one touch wonder'
The GB7s women's squad is currently training at Wales' Centre of Excellence where assistant coach Richie Pugh tells WRU TV's Graeme Gillespie some 'tough calls' will have to be made when it comes to finalising the 12 spots for Rio's Olympic Games.
Wales U20's Billy McBryde is looking forward to starting his first game against New Zealand this afternoon in the World Rugby U20 Championship where his side are looking to gain revenge from last week's pool defeat to the Kiwis.