Creating a bad guy is good fun. It’s often said that the antagonists in novels are the most enjoyable to write and often the readers’ favourite characters, and maybe that’s because it’s a matter of extremes. A good guy can have hidden depths and troubles, but he/she/they are almost always fighting these troubles and ensuring the depths don’t turn too cool and dark. A bad guy, on the other hand, will often plumb these darknesses for new depths of depravity and nastiness.