I agree with your description of it being cartoon ugly. It's not just conventional ugly, or sort of unpretty; it veers totally into being a caricature.
I'm even okay with some ugly! But not joke ugly.
"He was healthy to the point of heathendom and he acknowledged no power but his own."
Joseph Roth, Hotel SavoyThis message was edited 8/7/2014, 3:19 PM