The Governor is all kinds of crazy
Andrea and Michonne, after being on the road for months with only a couple of jawless and armless zombies to protect them and keep them company, found a sanctuary of their own. They stumbled into a seemingly wonderful town called Woodbury, a place full of clean people, actual homes, real food and a supposedly great guy running the place who calls himself the Governor. Sure, it's paradise on earth, until you realize that this guy is a few puppies short of a pet shop. Examples of his insanity include keeping live zombie heads in jars, running gladiator games with zombies, and keeping his zombified daughter alive and hidden.