Board Thread:Club Penguin/@comment-26326577-20150419094701/@comment-24908808-20150507120910

Nom Nom Cake wrote: shouldn't they not be called OCs? I mean, they should just be custom characters

As an expert in this field, I can confirm your suspicion.

OC stands for Original Character. The penguins here are using this term incorrectly, because their character belongs to an existing media/universe.

Thus, the correct term is Fancharacter. Fancharacters exist in a media/universe belonging to someone else. If they have relations to someone else's character, then they are a fancharacter.