Wow, I finally saw the "First and Last" skit with proto-Grover. First time in over 3 decades. And in this sketch, at last we learned that Beautiful Day Monster's real name is "Fred". Listen when p-Grover switches places to be second-to-last in line. Not once but twice he boasts "Fred's last!". Pardon the pun, but I think that was the first -- and last -- time they ever referred to that monster by name.