This graffiti reminds me so much of Jabba the Hutt from Star Wars. You know the 600-year-old big fat slug that sits around and eats crazy looking lobsters for snacks. I assume there is a link between the painter and George Luckas' Star Wars trilogy. Thus I guess the artist is probably male, in his 30s and a science fiction fan.
This begs the question, do you also believe that this is a funny Jabba the Hutt takeoff or is it just a wonderfully weird image?