leather and chrome
tailpipes
exhaust

OK, sorry, he could be Hispanic.
C'mon, Tiff, you don't have to be an immigrant to associate that demographic with Harleys.

How about this for a logo: a stylized beard and sunglasses, no other features, front view.

hhp

Torn denim vest
Rolling Thunder
Tatoos

http://www.choppersinc.com/index_html.html

Tiff someone posted this site maybe it can give you some inspiration

potato potato
slow
agricultural
poor brakes
(I know the v-rod is better equipped and better looking)
accessories
(both on and off bike)