Dexter Morgan, the sociopath, serial killing nice guy.

Dexter may be one of the quirkiest. He works for the police (blood spatter analyst). He considers himself to be non-human, essentially some form of android. Think of Star Trek’s Spock with a sense of irony and humor. He mimics normal behavior to get along. He acts out what he feels are normal responses and emotions. He has a compulsion to kill, which he has directed (with the guidance of his foster father) towards those that he feel deserve to die. He detects, but his end goal is dissection. Sound dreadful?

He's actually can be quite charming. In the hands of Jeff Lindsay, Dexter makes the abnormal seem, well sometimes a little poetic and very often very funny. Be warned, this character and series are not for everyone. Having said that, you may also find Dexter to be dear Dexter. Lindsay doesn't stop at one quirky character, but fills out with a cast of characters who all know something is wrong with Dex, but can’t quite figure out what it is. Two books in the series so far: start with Darkly Dreaming Dexter and continue with Dearly Devoted Dexter.

If you enjoy audio books, checkout Nick Landrum’s presentation of Dexter. Spot on, as they say in the UK.