The Xíng Tiān (刑天 "the heavens' convict") is a headless giant. He was decapitated by the Yellow Thearch as punishment for challenging him. Because he has no head, his face is in his torso. He wanders around fields and roads and is often depicted carrying a shield and an axe and doing a fierce war dance.
Image from the Shān Hǎi Jīng (Classic of Mountains and Seas).