Waldorf / The Great Gonzo / Randy Pig / Bill the Bubble Guy / Dr. Bunsen Honeydew / Beauregard / Co-Dependence Day Therapist / Gary Cahuenga / Artie Pipkin / Baby George / Bill / Cupid / Don the Prop Guy / Dr. Pain / Flea / Gary Chuenga / Gonzo / Jean Dodd van Clamme / Morty, Rick Moranis' agent / Purple Rain Man / Stu
Bobo the Bear / Johnny Fiama / Big Mean Carl / Pepe the King Prawn / Zippity Zap / Howard Tubman / Clueless Morgan / One of the Elvises / David Hogsellhoff / Snookie Blyer / Bobo / Captain Pighead / David Hoggselhoff / Dr. Bunsen Honeydew / Baby Kramer / Carl / Doglion / Ernst Stavros Grouper / Frankie Yakovic / Gil / Marty Pipkin / Pepe / Randall the Zebra / Rowlf / Sherlock Holmes / The Cow Announcer / Zippety-Zap
Statler / Announcer / Mama Fiama / The President / Baby Jerry / Bird Announcer / Camilla the Chicken / Clarissa / Dr. Julius Strangepork / Dr. Watson / Elvis / Ernest Pleth / Ice Station Zebra / J. P. Grosse / Jowls / Lew Zealand / Lobster / Moo-Ing / One of the Elvises / Percy the Ham-Eating Pig / Phil, Rick Moranis' lawyer / Reggae Rodent / Rob Reiner Muppet / Robbie / Robot Abraham Lincoln / Scuzzball / Slim Wilson / The Bird Announcer / Vulture / the head of the network
Kermit the Frog / Rizzo the Rat / Andy Pig / Beaker / Mr. Poodlepants / Meepzorp / Bean Bunny / Bug Llewelyn / Captain Pighead / Dance-a-Lot / Flash / Foo Foo / George the Janitor / Lash Holstein / Miss Weatherington / Rizzo the rat