the harlequin. caracter of the italian theater, michiveous and um caniving. also one of the batman villians (harley quinn) and harlequin is also harley's real name. so. does anybody out there know anything else?? oh! the diamonds. I almost forgot the diamonds...
Earliest Harlequin characters appeared in ancient Greek theatre, weilding giant phalluses.
..and uhh.. Harlequin Valentine is a brilliant little tale by Neil Gaiman with drop-dead gorgeous illustrations.
I thought Harlequin first appeared in Italy in Commedia del'Arte. And he wasn't dressed in diamonds, either - just patches on his clothes. His name was Arlechinno, just in case you wanted to know that too...