The residents

http://www.residents.com/historical/

"Over the course of a recording career spanning several decades, The Residents have remained a riddle of Sphinx-like proportions; cloaking their lives and music in a haze of wilful obscurity, the band's members never identified themselves by name, always appearing in public in disguise -- usually tuxedos, top hats and giant eyeball masks -- and refusing to grant media interviews."

The residents have a crazy persona, of eyeball headed men in tuxedos. The image works suprisingly well and has held up for the residents for decades. the roundness of the eyeball works as a head, and gives them a freakish quality, but also the tuxedo offsets that with a smart look. The single eyeball has often been a horror icon, such as a cyclops or saurens eye in lord of the rings, but by pairing it with the tuxedo and right attitude it takes on a fun conotation. This is something i could use in the o2 brief as it is strange but cool. possibly with other facial features such as nose and mouth.