From Know your Meme:
Rule 63 is an internet adage which states that for every fictional character, there exists a counterpart of opposite gender. It is often considered part of the Anonymous list known as Rules of the Internet, and among that list it is the most popular after Rules 1 & 2 and Rule 34.
A: For every given male character, there is a female version of that character.
B: For every given female character, there is a male version of that character.
Rule 63 is an internet adage which states that for every fictional character, there exists a counterpart of opposite gender. It is often considered part of the Anonymous list known as Rules of the Internet, and among that list it is the most popular after Rules 1 & 2 and Rule 34.
A: For every given male character, there is a female version of that character.
B: For every given female character, there is a male version of that character.