I asked this question of the whole board a few years back, so you may have answered then. If so you can double down on your answer or if your thoughts have changed - revise them.
When a guest star was booked for The Muppet Show some or all of these folks Henson, Juhl, Lazar, Burns and Oz would consult with the performer to find out what they were interested in doing.
1. Did they have any unusual skills? (Beverly Sills balancing a spoon on her nose).
2. Was there something they always wanted to do but because they were known as one "type" they could not. (Nureyev tap dancing and singing for that matter).
3. Were there any caracters they wanted to work with?
4. Often the performer would be asked to do at least a bit of what they were known for (Sills sang some opera and Nureyev danced ballet). What would they want to make sure you did?
What would your answers be? For the purpose of these questions for question 3 you are limited to 3 characters. Also for these questions characters who normally appear together or a group would count as 1 character. (Bunsen & Beaker; The Electric Mayhem etc. But pairs like Kermit and Piggy would count as 2).
If someone already asked something similar I apologize I skim read the posts but easily could have missed it.