Australia

Appearance
Australia has thick eyebrows like most of England's other relatives, a reference to him being a former colony of England WHEN IN REALITY ENGLAND JUST DUMPED A SHIT TON OF CONVICTS ON HIS DOORSTEP AND SAILED THE FUCK AWAY. Based on his sole official coloured sketch, he has brown hair, green eyes, an adhesive bandage across the top of his nose, and two ahoges that change position depending on the angle. In most appearances, he seems to be wearing a WW1-era Australian Digger's uniform with a necktie.

Personality and Interests
Wy has described Australia as acting as a big brother figure towards her. Volume 4 character notes describe him as being courageous regardless of the environment, and that his food is wild because of his wild personality. Australia states during the Christmas 2011 event that he finds the idea of a cold Christmas surprising. In the Halloween 2013 event, Australia is portrayed as a reckless and wild individual who neglects his responsibilities. Character notes describe him as the type to be having a conversation with someone one moment and chasing after a passing cat the next.

THEY'RE CALLED PRAWNS NOT SHRIMP
THONGS NOT FLIP-FLOPS OR SANDALS OR JANDALS WHAT THE BLOODY HELL IS UP WITH KIWIS CALLIN' THONGS J A N D A L S.

foster's isn't strayan you gotta look to vb and toohey's

In nearly all of his appearances he is depicted with an evil-looking koala. During the segment How Each Nation Watches Movies (located at the end of Hetalia of the Dead in Volume 5), it is shown that Australia gets drunk at the movies. As well, he was pictured with a different koala. The koala appeared to be female as it had eyelashes, blush on its cheeks, and wore a small bow on the right side of its head. The koala was also smiling and in good spirits.

Wy
Australia is an older brother figure to Wy, and is implied to have recognized her as a country (as the Mayor of the surrounding township has as well). While they are on good terms, Wy is still frustrated that she hasn't been allowed to build her driveway. At the Halloween 2011 site event, Australia is shown carrying a sleeping Wy on his back when the party is ending.

In the Manga
Australia's first appearance in the published manga was in the volume 3 HetaliaWorld Map. He made subsequent appearances online in sketches, an omake profile, the Christmas 2010 event, and the Halloween 2011 event. During theChristmas 2010 event, Australia checks himself for the mark indicating him to be the savior of the parallel nations' world and reports that he is lacking it. He, along with Tonga and New Zealand, dress as a sheep for America's Halloween party for the Halloween 2011 event. Australia appears again during the Christmas 2011 event having barbecue with New Zealand, Hutt River, and Wy at the beach.

In the Anime
Australia makes his first anime appearance in the Hetalia: The Beautiful World episode "Gakuen Hetalia: Go Forth! Newspaper Club!! Second Half" when Italy, Germany, and Japan were interviewing Hungary about the Swimming Club they are both in and asks Japan to swim with him.

Australia makes a brief non-speaking cameo appearance in Hetalia World Twinkle after being mentioned by Italy after he picked up a tube of Vegemite in the Hetalia: World Twinkle episode "Let's Eat Military Rations!"

Name
A more recent blog post of Himaruya's has revealed his potential names to be Ralph, Christian, Kyle and Jett.

Trivia

 * For the Halloween 2011 event, Australia dressed as a sheep with the other Oceania nations New Zealand and Tonga.
 * In a Comic Diary strip, Austria is seen complaining that he is often called "Australia" due to the similarities in their names in Japanese, English, and several other languages, and as a result has a hairstyle similar to Austria's (but with two ahoge instead of one).
 * In the original Japanese, he speaks in a Shikoku dialect, meant to represent Australia's "mysterious" English.
 * A possible reason for Australia being in the swimming club in "Gakuen Hetalia: Go Forth! Newspaper Club!! Second Half" is that, aside from America, he had won more Olympic medals in swimming than any other country.
 * There is high chance that Australia's birthday is 26 January considering it is Australia day and also when it was "founded" on the year 1788.