Description
Australia possesses thick eyebrows reflecting his historical ties to England, along with brown hair, green eyes, and an adhesive bandage across his nose bridge. Two ahoges shift position depending on perspective. He typically wears a khaki World War I-era Australian Digger uniform complete with a necktie.

He embodies courage regardless of setting, displaying a wild and impulsive nature. His interests favor rugged outdoor activities and competitive sports, especially against New Zealand. Spontaneous actions define him, like abruptly leaving conversations to chase cats or neglecting duties. He often carries children, particularly micronations like Wy and Hutt River, and maintains a boisterous, competitive rapport with New Zealand, whom he nicknames "Kiwi" (receiving "Oz" or "Aussie" in return). An evil-looking koala frequently accompanies him, though a variant depicts a more benign female koala wearing a bow.

His background as a former British colony shapes key relationships. England, considered too distant, entrusted New Zealand with supervising Australia during childhood, fostering a sibling-like bond marked by frequent bickering yet underlying closeness. Australia acts as an older brother figure to Wy, implied to have officially recognized her. Tensions exist, such as Wy's frustration over being barred from building a driveway. Other interactions include rivalry with Austria over name confusion and participation in Oceania activities, like dressing as a sheep with New Zealand and Tonga for Halloween.

Appearances span manga, anime, and events. His debut occurred in *Hetalia World Map* (Volume 3 manga). Subsequent roles include checking for a "savior mark" (Christmas 2010), beach barbecues with Oceanic nations (Christmas 2011), and impulsive acts (Halloween 2013). In anime, he first appeared in *Hetalia: The Beautiful World*’s "Gakuen Hetalia" episode, inviting Japan to swim. Non-speaking cameos followed in *World Twinkle* (noted for Vegemite) and a referenced off-screen kangaroo encounter. *World☆Stars* confirmed his inclusion without new development beyond existing traits.

Cultural and linguistic details include speaking a Shikoku dialect in Japanese media to mirror Australian English's distinctiveness. Some fan communities avoid associating him with January 26th (Australia Day) due to historical sensitivities, opting for alternatives like May 3rd (National Wild Koala Day).