I'm a geek for all things fun and silly. This site I actually got off my friend, Dana's, Facebook. It was so much fun to play around with. Basically, it gives you a set amount of heads, eyes, mouths and other head shot features that you can chose and make this avatar looking thing. It's cartoony, silly and just dang fun. I made two for myself and once for my wife. Aidan even got into the action. He was so funny - he wanted a dog collar and eyebrow/lip piercings. Oh the mind of a (nearly) 3 year old!
So go 'manga' yourself! It's a riot!