Mystery man of Kelvinbridge!

This quite striking example of street art - or graffiti as we used to call it - caught my eye as I went down the escalator at Kelvinbridge subway station.
It was dark but I managed to get a bit of street lighting in the shot then played with Picasa.
Not sure who the guy is, perhaps a musician, or an artist, or the best mate of the graffiti artist. Who knows? It's a mystery.