First evil you are not allowed to blow up the earth
Umm, why?
At least not without a set of Dragon Balls to wish it and everyone on it back (except Hinatatas) after doing so, or something to that effect.
Hmm, that's a good point; no fear I won't bring her back or her fans, but I think I will make you fully human now. Meaning you shall not be a half-cat person and get all the ladies.