-This starts off after the first showing of "The Last Roundup" - Also, the character labels are prone to change... -

There are two lists on the board in the main room, and the same lists are in the town center of Ponyville;
One list "Cannon", the other list named "Fandom".
Everypony's name is on those lists, and after every "episode" the names are switched around based on the results of the most recent "episode".

As a character, we are written to please both our Creators, the weird ponies who direct us in our lives, and the "people" who watch us, the Fandom. They each have their own "realm", one that is very different from our Equestria.

If either group does not like a character, they are removed from the list and erased until further notice, putting that character in the Realm of Rejection.