3rd Law: There is no such thing as an invincible superheroine who doesn't have a weakness.

Corollary: The superheroine's nemesis will inevitably learn about her weakness and exploit it.

I love all the other spoofs and corollaries you guys have thought up. :p

lol yes you did just say that

the Internet, like the North, remembers

The Second Law of Superheroines (as formulated by me, KatieTay):

For every superheroine, there is at least one equal or stronger supervillainess.

:p

I can attest that most of us are already shipping Lena/Kara. Go away Mon-El! Boo! :p

Based on my observation, I am able to formulate the above law :p which goes as follows:

Superheroines in peril tend to remain in peril.