The Chun Qiu Yun Dou Shu defines the ‘Kui Xing' as "The four stars in the first section of the dipper".
In Daoist tradition, Kui Xing is said to have been "bent and hunchbacked, as if he were an actual calligraphy character", and came to be viewed as a saint of human fortune, particularly with regard to imperial examinations.
Again being unable to directly construct an image of 魁, the character was split into its constituent radicals [鬼 Gui - Ghost/Spirit and 斗 Dou - Ladle/Gourd] and illustrated as such.
As his form developed, people depicted Kui Xing's right foot standing on a character 鰲 (ao), a giant turtle, in reference to a traditional saying, 獨佔鰲頭, "to stand lonely on the ao's head", meaning coming in first in examinations[2]), his left foot support a ladle, a writing brush in his hand, and his body full of vigor and life.
Artists have also depicted the ao on which Kui Xing stands as a giant fish (see the image of a temple in Xinwupu, Hubei), or as a realistic-looking turtle (e.g., the statue near Bijiacheng - the "Brush-rest wall" - in Changde, Hunan[3]).