At least your dog is cool.
The marketing of this game makes it seem as though you will be constantly morphing physically to match you choices and alignment but it's not true. If you are 100% good you get a little halo and if you are 100% bad you get little horns. The biggest factors are the clothes you choose which is totally up to you and what you eat. Eat to much bad food and you get fat. I deal with this enough in my real life I'm not sure I need it in my video games. Actually I wouldn't have minded it if they took into the fact that your guy runs like 170 miles a day. I think that would make you pretty thin a la GTA San Andreas but instead you can only get svelt by eating celery. Ridiculus. Well who knows maybe that works in real life too. Anyways, best part of the game is your dog!