Who is your shadow boxing/sparring partner?

When I'm actually trying to shadowbox, or even do drills on my own, I try and imagine an opponent whom I can punch in the face; so that i'm not just flailing around in the air like I appear to be. When I used to do kung fu I would imagine my training partners, but since I started doing goshin jutsu (which is basically karate) I have switched to fighting an African gentleman with a shaved head. As for why; darned if I know. Possibly some subcoscious racist association I have between such people and general violence/combat sports?



Well, now that I've got the ball rolling, what about anyone else? Who do you fight when you shadowbox, and why?