This page lists the most popular mains for each region in Super Smash Bros. Ultimate
Queensland Queensland
Bowser Bowser - 30 players
Ness Ness - 30 players
Victoria Victoria
Bowser Bowser - 34 players
New South Wales New South Wales
Donkey Kong Donkey Kong - 23 players
South Australia South Australia
Joker Joker - 21 players
Australian Capital Territory Australian Capital Territory
Bowser Bowser - 17 players
Western Australia Western Australia
Captain Falcon Captain Falcon - 20 players
Northern Territory Northern Territory
Roy Roy - 1 player
Wolf Wolf - 1 player
Pyra / Mythra Pyra / Mythra - 1 player
Tasmania Tasmania
Donkey Kong Donkey Kong - 6 players
New Zealand New Zealand
Joker Joker - 29 players