Muppet Casting Rules
Because you can't just do whatever you want when you're casting the muppets.
Rule #1:You get ONE Human celebrity actor to play a character. This can be a main protagonist, a villain, a joke character, whoever fits best, but you only get one TRUE "celebrity" guest.
Rule #2: You may have multiple celebrity cameos, but their characters must appear only once and then never again, otherwise the celebrity counts as your one true celebrity role.
Rule #3: You may have two additional non-celebrity human actors to play roles where necessary. Generally this should be one man/boy and one woman/girl, but gender is a construct and this rule can be flexible depending on the roles in question.
Rule #4: Muppets should not be cast as multiple characters unless it is a story where two roles are traditionally played by the same actor (ie, the wolf and the prince in Into the Woods). Each muppet should only have one character in the story that they play.
Rule #5: The exception to rule number 4 is Miss Piggy, who may play multiple roles (as she does in Muppet Wizard of Oz) if the roles all make sense for her to play. This is both because she is really the only female muppet of note, and because, let's face it darling, she has the range.
Rule #6: You get ONE Unique Muppet per show. This should only be used once all other possible casting options have been exhausted, but an original muppet may be designed in order to fill a role that's particularly difficult to cast with current existing muppets and the One Celebrity and Additional Humans have already been used.
Rule #7: Background characters can be a mix of human and muppets, the ratio is dependent on the story itself. However, background characters are only really worth mentioning in the case of musicals, when discussing ensemble pieces.
Rule #8: Finally, any and all of these rules are in fact breakable if the end result is funny enough to justify it.
