Twelve senior officials who each adopt an animal of the Chinese zodiac — a numbered set borrowed wholesale from a calendar.
Filed by its count, not its title
Reduced as a phrase, “The Zodiacs” would sit on The Signal — but that would be reducing wording this reference chose. The set is filed under 3 · The Telling instead, because 12 is what its author chose, and a chosen number outranks an imposed one.
Twelve high-ranking members of the Hunter Association, each associated with one animal of the Chinese zodiac and each dressing, to varying degrees of enthusiasm, in accordance with it.
Borrowing a number that already exists is the cheapest possible way to make an organisation feel old. Nobody needs to be told why there are twelve; the reader supplies the reason from a calendar they already know. That inherited weight is doing work no invented number could.
It is also self-limiting in a useful way. A zodiac cannot be extended — there is no thirteenth animal — so the author is protected from the inflation that eventually afflicts a ranked set like the Espada, which had to invent a zero to keep climbing.
The twelve animals are among the most reused numbered sets in the medium, and the reuse ranges from the structural to the decorative. It is a set that arrives pre-assembled with names, personalities and an order, which is a large amount of free material for a number that costs an author nothing to adopt.