The Carolers, including Caroler #1, Caroler #2, Caroler #3 and Young Caroler, can be as small as a handful of performers or as large as your stage and theater can accommodate. If your cast is large enough that you are not double-casting your carolers as other named characters, consider assigning Dickensian-sounding names to your Carolers, or ever have them invent backstories so that they feel more connected to their roles.