What is r63?

R63, also known as Rule 63, is a popular internet term within the fandom community that originated from the website "4chan." Rule 63 states that for every fictional character, there is a corresponding version of the character that is of the opposite gender. This means that any male character can have a female version and vice versa.

The concept of Rule 63 is often used in fan fiction, fan art, and cosplaying. Fans enjoy exploring gender-swapped versions of their favorite characters and imagining how they would look or act in an alternate gender.

Rule 63 has become a widely accepted and celebrated concept in various fandoms, and it has inspired countless creative works and discussions among fans. It is a fun and imaginative way for fans to explore gender representation and expression in fictional worlds.