Well, I don't know about Chopper but if he's anything like Dave Courtney, he's one of the generation of criminals who've realised they can make far more money, and legitimately, on the celebrity circuit than they ever could in their former professions.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'