A Kungai demon
The Kungai is a powerful and deadly Asian race of demon. The kungai have a horn called a Tak horn on their head which possess magical properties. The Tak horn is tied directly to the Kungai's life force; regardless if this is mystically or physiologically, the Kungai will die if it is removed. Ironicaly the Kungai encountered by Angel's team that died due to having its horn removed was avenged when Cordelia Chase used the demon's Tak horn to kill Barney, the demon responisble for its death.