Muppet Show episodes that didn't feature main characters

With the exception of the opening credits, these main characters did not appear in the following episodes of The Muppet Show:

Miss Piggy

 * Episode 119: Vincent Price
 * Episode 121: Twiggy
 * Episode 219: Peter Sellers
 * Episode 322: Roy Rogers & Dale Evans
 * Episode 403: Shields & Yarnell
 * Episode 416: Jonathan Winters
 * Episode 504: Shirley Bassey
 * Episode 518: Marty Feldman
 * Episode 519: Chris Langham

Fozzie Bear

 * Episode 123: Kaye Ballard
 * Episode 415: Anne Murray
 * Episode 423: Carol Channing
 * Episode 509: Debbie Harry
 * Episode 515: Carol Burnett
 * Episode 520: Wally Boag

Scooter

 * Episode 103: Joel Grey
 * Episode 105: Rita Moreno
 * Episode 107: Florence Henderson
 * Episode 110: Harvey Korman
 * Episode 113: Bruce Forsyth
 * Episode 509: Debbie Harry
 * Episode 517: Hal Linden