RWC,,who are the heavies?

Tonga have both the heaviest player & heaviest forward pack in Japan
Tonga's pack average forward weight at 118.53kg
The All Blacks' average weight is 114kg with the English slightly heavier at 115.4kg
The average weight for a player across all forward packs is 112.37kg

Heaviest players

Ben Tameifuna (Tonga) – 153kg
Taniela Topou (Australia) – 135kg
Michael Alaatoa (Samoa) – 132kg
Eroni Mawi (Fiji) – 131kg
Tomas Francis (Wales) – 130kg
Leroy Atalifo (Fiji) – 130kg
Ofa Tu'ungafasi (New Zealand) – 129kg
Atu Moli (New Zealand) – 127kg
Billy Vunipola (England) – 127kg