New Zealand
Coach: Steve Hansen
Captain: Richie McCaw
Key man: Aaron Smith - the classy halfback is the link man between the All Blacks' pack and all that talent out wide.
The All Blacks are the clear favourites. They are always clear favourites.
They have been the world's No 1 ranked side for 10 years and have lost just three times since winning the 2011 World Cup.
They certainly have more depth and arguably more talent and ability than any other squad in the tournament.
But. But. But. The All Blacks have never won the World Cup away from home and have a tough quarterfinal, probably against France or Ireland.
We all know what happened the last time the All Blacks played France in a quarterfinal. Then there was that stinging defeat to France in the 1999 semifinal as well.
Odd spot: Home to 9-year-old Talula Does the Hula From Hawaii until her parents were ordered to change her name in 2008.
Argentina
Coach: Daniel Hourcade
Captain: Agustin Greevy
Key man: Juan Martin Hernandez - the experienced first five-eighth helped guide Los Pumas into the semifinals in 2007 and was one of the stars of the tournament.
Argentina performed above expectations at the 2007 World Cup, finishing third, and has improved since joining the expanded Sanzar competition in 2012.
The world No 8 achieved an historic win against South Africa at Kings Park last month, with winger Juan Imhoff grabbing three tries in the 37-25 victory.
The Pumas have always had strong set pieces but now have some flair in the backs and should join the All Blacks as the other team from pool C to make it through to the quarterfinals.
Their opening game is against the All Blacks at Wembley Stadium on September 21 (New Zealand time) and a good performance will set the tone for the remainder of their tournament.
Odd spot: July 20 is Friend's Day in Argentina and in Buenos Aires it is a public holiday.
Tonga
Coach: Mana Otai
Captain: Nili Latu
Key man: Sona Taumalolo - the former Chiefs prop has scored four tries in 17 games for Tonga and is known for his bulldozing runs and crunching defence.
Tonga has been to every World Cup bar 1991 but has never progressed beyond pool play.
Somehow the Tongans almost inevitably end up in a pool with the All Blacks (1999, 2003, 2011 and 2015) which has not helped their prospects.
Tonga beat France 19-14 in pool play at the 2011 tournament and a repeat of that performance against Argentina on October 5 (New Zealand time) could see the Pacific Islanders reach the quarterfinals.
The side prides itself on its bone-jarring and fearsome defence but has let itself down with some ill-discipline over the years.
Odd spot: The Kingdom of Tonga is an archipelago comprising 177 islands. Word is each island has provided at least one All Black.
Georgia
Coach: Milton Haig
Captain: Mamuka Gorgodze
Key man: Gorgodze - the powerful loose forward's nickname ''Gorgodzilla'' rather sums it up nicely.
Georgia will be pleased with its draw.
It is arguably in one of the weakest pools and will feel it is in a four-way race for second place behind the All Blacks.
It has a game based around a no-nonsense and bruising forward pack, many of whom play for top clubs in France.
In set play, Georgia will be competitive, particularly in the scrum, with props Davit Kubriashvili and Davit Zirakashvili highly regarded.
Its game against Tonga on the opening day of the tournament shapes as a crucial match, but it is doubtful Georgia has the imagination to upset the likes of Argentina.
A heavy loss to Ireland late last year suggests the world No 16 will have to punch above its weight to escape pool C.
Odd spot: Georgia is not called Georgia. Georgians call their country Sakartvelo.
Namibia
Coach: Phil Davies
Captain: Jacques Burger
Key man: Chrysander Botha - the speedy outside back is perhaps Namibia's most potent weapon.
Namibia has been to four World Cups and is yet to win a game in 15 attempts.
Chances are when the tournament finishes, Namibia will still be winless.
The world No 20 ranked side made a poor start to 2015 with a heavy loss to Romania and it also lost to Spain.
But a change of coach mid-year has seemingly sparked Namibia, with the team beating Russia (twice), Kenya and Zimbabwe.
Not exactly thorough preparation for a date with the All Blacks on September 25 is it?
Remember what happened in 2003 - Namibia lost 142-0 to Australia. That record World Cup defeat could be under threat.
Odd spot: Home to the largest piece of meteor on earth. It weighs 66 tonnes.
