From what i can gather while playing,
the only major differences that change you character are

Girl-Guy
Good-Evil
Fat-Thin
Use Will- Dont Use Will

so from what i can see there is basically stock characters for Good or Evil,
and the only major visual changes come from superficial things like costume, hair cuts, and hair dye and the ones listed above.
Please attack this statement if youre game has intuitively evolved you into a fairly different looking character than usual,
but from what ive noticed, i dont even think that the good guy on the cover is possible,
and i havent gone evil yet, but is the evil character possible to the extent that it is on the cover?

"From what i can gather while playing,
the only major differences that change you character are

Girl-Guy
Good-Evil
Fat-Thin
Use Will- Dont Use Will

so from what i can see there is basically stock characters for Good or Evil,
and the only major visual changes come from superficial things like costume, hair cuts, and hair dye and the ones listed above.
Please attack this statement if youre game has intuitively evolved you into a fairly different looking character than usual,
but from what ive noticed, i dont even think that the good guy on the cover is possible,
and i have gone evil yet, but is the evil character possible to the extent that it is on the cover?"

The personality sliders, age, gender, and how fat you are dictate your characters looks.

"TomboDemon said: The more evil you are, the more your horns grow out."

Nope. No matter how you play the game, your character will always end up being a fat glowing woman with a bad skin complexion and downturned horns.

"Nope. No matter how you play the game, your character will always end up being a fat glowing woman with a bad skin complexion and downturned horns."

Well it's a step above Pokemon.