The names for Xenoblade's hero and heroine could be vaguely heard in last week's trailer. Famitsu has a more formal introduction to the characters:
Shulk
The main character. A fan of literature. He heads off on a journey with his friends to defeat the Kishin troops who attacked his village. Race: Homs, Age: 18, Height: 171cm, voice: Shintaro Asanuma
Fiorun
The heroine. Childhood friend of Shulk and little sister of Dunban (below). Race: Homs, Age: 18, Height: 160cm, voice: Eri Nakao
Dunban
The shirtless guy from the trailer. Hero of the Homs people, he used the Monado sword and defeated many Kishin army troops. He was injured during a major confrontation 1 year back and is now healing. Race: Homs, Age: 30, Height 180cm, voice: Ryo Horikawa
Dickson
Dunban's war friend from a long time back. He watches over Shulk like a parent. Race: Homs, Age: 44, Height: 181cm, voice: Tsuyoshi Koyama
Mumuca
A traveling warrior. He once fought Dunban for the right to be the person who would use Monado. Race: Homs, Age: 30, Height: 195cm. voice: Norio Wakamoto