A sporadic qualifier for the tournament, Uruguay qualified for their second tournament in a row in 2019.
A side with incredible talent, Fiji could give Australia and Wales some problems.
A potential bogey team for Wales first up, Georgia could be ones to watch in Japan.
Unlikely to proceed to the knockout stages, Tonga could still be a surprise package in Japan.
The last team to qualify for the tournament, Canada had to go through the Repechage tournament to book their place in Japan.
Namibia booked their place once again at the World Cup, but are in a tough group.
Having to rely on a play-off win against Germany, Samoa found it very tough to qualify for Japan.
Russia's qualification for the tournament was a shock and we cannot see them going very far at all.
Hosting their first World Cup, can Japan get out of their group and into the knockout stages?
Former Romania sevens player Tony Pisaroglu argues that Romanian rugby needs an overhaul