Haku is Yubaba's apprentice and second-in-command at the Bathhouse. He is a bit older than Chihiro, about 12 years old, and has a lean build. He has sharp grey-green eyes, a bob Japanese hairstyle of dark hair which is a darker shade of his eye color, and thin eyebrows. Fans of the movie even argue if his hair is black or green because of the similarity of his hair and eye color, as well as the fact that his mane when in dragon form is green. He wears a white kimono with puffy, light blue Japanese trousers known as "monpe", along with a purple sash around his waist.
As a River Spirit, he has the ability to transform into a beautiful silver dragon; an animal commonly associated with rivers and water in Japanese culture and mythology. His dragon form is that of a typical Eastern dragon, with a long, snake-like body, deer-like antlers, flowing whiskers, and a lupine face. In this form, he has smooth, silver scales with a turquoise mane. He can fly and seems to have the ability to interchange between his human and dragon forms at will. [Source: wikia]
You can download this papercraft toy here: Spirited Away - Chibi Haku Free Paper Toy Download [Instruction]