The names :
Source : http://www.youtube.com/watch?v=_Bwi539ujIk (time 22.22)
However, there is a slight controversy to the last name. It is also called Adhomugam ( Source : http://www.tamilbrahmins.com/translations-meanings/8231-need-information-lord-shivas-sixth-face.html). Some people believe it is beyond the comprehension of human mind, other proclaim four faces as the 4 directions, 5 th one facing upwards and the 6 th one facing the earth and can’t be seen, while still other consider Godess Shakti as the sixth face.
But one this is for sure, he has six faces and six sparks from the 3rd eyes of six faces of Shiva resulted in the birth of Lord Murugan to Kill Suran (Sura Samharam).