Nac Mac Feegle
The Nac Mac Feegle (also sometimes known as Pictsies, Wee Free Men, the Little Men and "Person or Persons Unknown, Believed to be Armed") are a fictional type of fairy folk that appear in Terry Pratchett's Discworld novels Carpe Jugulum, The Wee Free Men, A Hat Full of Sky, Wintersmith, I Shall Wear Midnight, Snuff, and The Shepherd's Crown. At six inches tall, these fairy folk are seen as occasionally helpful thieves and pests.
The Nac Mac Feegles' skin is characterized as blue, heavily tattooed and covered with woad. All Feegles have red hair and tattoos that identify their clan. They do not possess wings. According to Pratchett, “They speak a mixture of Gaelic, Old Scots, Glaswegian, and gibberish.” They are strong and resilient.
In the fictional world of the Feegles, the males are rowdy and spend their time drinking, fighting and stealing. They are also very superstitious.