The once great ruler of the Mediterranean, as well as the grandfather of Italy and Romano. His eyes are brown (but were depicted as being green in earlier artwork) and his hair is dark brown with two curly ahoge sticking out on both sides of his head, similar to his grandsons. He has tanned skin, but in the anime adaptation, his skin was changed to being fair.  It was said in his official profile that he has a lot of “stupid” grandchildren, meaning that his grandchildren failed miserably in following in his footsteps. At this time, Italy and Romano have been the only two confirmed to be his kin, but some suspect that Spain, France, and others may be related, too. Ancient Rome raised Italy and called him his “favorite” grandson. The two had a very close relationship, and when Ancient Rome eventually died, Italy was devastated and refused to become the new Roman Empire due to what ended up happening to his grandfather. Throughout the series, Italy refers to Ancient Rome as “Grandpa Rome” (Rome-ojiichan), and thinks very highly of him. Although he didn’t turn out as successful his grandfather, Italy did manage to inherit his natural talents for trading and art, plus his charm and charisma.  Because he was busy raising Italy, Grandpa Rome remained more distant from Romano. This caused Romano to feel inferior and overshadowed by his younger brother. He also became very jealous of him for not only taking their grandfather’s affection away from him, but also because Italy inherited his talents and because Romano claims that Italy looks more like Grandpa Rome in appearance than he does. Despite this, it was shown that Grandpa Rome loved and cared for them both equally, and as shown in the manga, he took the time to visit Romano from heaven as he did with Italy.  His close friend and guard was Germania, the Holy Roman Empire’s grandfather. Eventually, although they were inseparable at one time, the two became enemies. The entire truth behind everything that went down during this period in history remains unclear, but it is known that Germania was the one to deliver the final blow to Grandpa Rome.   He’s depicted as a strong, handsome, and lively man who had so much love to spread around, that he fell for both Egypt’s and Greece’s mothers at the same time. In the original manga illustrations, he was drawn as an elderly man with a small mustache, but his appearance was later changed to a much younger and nobler looking man. His hobbies included painting, sculpture-making, music, and any other form of the arts. He loved delicious food, beautiful women, and sex. It was mentioned that whenever he saw a strong man, he overflowed with great excitement. 

Based on a popular web-released manga series by Hidekazu Himaruya, this has been described as a "cynical gag" story set in Europe in the years between WW1 and WW2 (1918-1939), using exaggerated caricatures of the different nationalities as portrayed by a gaggle of bish&#333;nen. For example, the Italia Veneziano character is into pasta and women. The Deutsche (German) bishi loves potatoes and sausages, and Nippon is an otaku boy. Installments of the manga have jumped back and forth in setting from the ancient times to modern-day geopolitics. The manga's title comes the Japanese words for "useless" (hetare) and Italy (Italia).

Christopher Robin Sabat is an American voice actor, producer, ADR director, and line producer at Funimation. He provided voices for a number of English versions of Japanese anime series such as a number of Dragon Ball characters, including Vegeta, Piccolo, Yamcha, and some others. In Funimation's re-dubbing of One Piece, he voices Roronoa Zoro. Other major roles include Kazuma Kuwabara in Yu Yu Hakusho, Alex Louis Armstrong in Fullmetal Alchemist, Tatsumi Saiga in Speed Grapher, Kurogane in Tsubasa Reservoir Chronicle, Daisuke Jigen in Lupin the Third and All Might in My Hero Academia. In video games, he voiced Garland in Dissidia: Final Fantasy, Rundas in Metroid Prime 3: Corruption, Alex D in Deus Ex: Invisible War, and both Captain Smiley and Star in Comic Jumper. He is the founder and director of OkraTron 5000, an audio production company that provides support for some of Funimation's and other dubbing titles.

The movie involves a mysterious force causing unusual incidents to happen all over the world, and the nations having to try to ward off the threat of human extinction from the alien race known as Pict, who seek to transform mankind and drain the color from the world (with America deciding that the world will be saved under his command). 
(Source: WikiHetalia)

The third and fourth seasons of the Hetalia Axis Powers anime. A continuation of the first 2 seasons under a new name, still adapting the online webcomics drawn by Himaruya Hidekaz. 
Based on a popular web-released manga series by Hidekazu Himaruya, this has been described as a "cynical gag" story set in Europe in the years between WW1 and WW2 (1915-1939), using exaggerated caricatures of the different nationalities as portrayed by a gaggle of bish&#333;nen. For example, the Italia Veneziano character is into pasta and women. The Deutsche (German) bishi loves potatoes and sausages, and Nippon is an otaku boy. Installments of the manga have jumped back and forth in setting from the ancient times to modern-day geopolitics. The manga's title comes the Japanese words for "useless" (hetare) and Italy (Italia). 
(Source: ANI)

Think of it like WWII, except every country is a pretty boy instead. A hilariously stereotypical pretty boy. America loves burgers, Russia is into the vodka, and China has pandas and a wok. It is centered mostly around Italy, who has both a North and South character. The Hetaria portion of the name is probably mocking Italy, as Hetare means "Useless."
