Completely different to the movie, this is a black novel with nihilistic overtones and set in a world where the superheroes lost and the supervillains won.
Inverting the trope of the hero destined for greatness but ignorant of his past, Wesley Gibson is a corporate drone with a girlfriend who has sex with anyone but him, a boss who dominates him in every way and who takes everything that life throws at him without a complaint - until the day the Fox, a stunningly beautiful woman arrives to shoot up a sandwich shop and take him away from his life. Wesley discovers that his father was the Killer, a vicious supervillain, and that he's inherited his father's killing abilities. With the help of the Fox and the Professor, he rids himself of his conscience and inhibitions to assume his father's role. However as he sinks deeper into a world of violence and deprivation, questions start to rise as to who was responsible for his father's murder and Wesley begins to have doubts about the world he's joined.
There are some wonderfully dark ideas at work here - particularly some of the villains, including one made from the faeces of the 666 worst humans in history and the cloned Down's Syndrome brother of a well-known superhero. Millar, Jones and Mounts take obvious glee in their world and there is a lot of violence on show here.
Although lip service is played to Wesley having doubts about his new life, there is little real emotional depth to this novel so if you're looking for something more sophisticated, this isn't for you. Despite some nice touches of black humour, the bleakness can be a little wearying at times and I'd have liked to see more about the inter-dimensional element to the storyline.
It's not a bad read but lacks the complexity to make it a truly great graphic novel. Still, it's worth checking out and personally, I found it a lot more interesting than the movie adaptation.