Sergio Muñoz Sarmiento asks:  
Who owns the copyright to a tattoo?  The occasion is a 
lawsuit by a tattoo artist who tattooed a lion on an MMA fighter, whose likeness (including the tattoo) now appears in a video game.  Sergio seems to think the tattoo artist will prevail in a knockout.  I'm not so sure, for the reasons mentioned 
here and 
here, the implied license theory in particular.