Kirtimukha

A demon who asked Shiva how to satisfy his hunger. Shiva advised him to eat himself. The demon obeyed. When only the head was left, Shiva stopped him and blessed him.

His head adorns temple entrances. Kirtimukha means glorious (kirti) face (mukha)

Read about Kirtimukha here
http://utkarshspeak.blogspot.com/2012/02/mahashivratri-part-2.html