Characters who start with the prefix "The":
Agreeable
- The Alligator King- title character in song, nobility
- The Amazing Mumford- official character name, used in dialogue and in the book Happy and Sad, Grouchy and Glad
- The Big Bad Wolf (Muppet Classic Theater)- common name in fairy tales
- The Big Bad Wolf- common name in fairy tales
- The Birdman- identified as such in credits and dialogue, reference to "the Birdman of Alcatraz,"
- The Birthday Bird- name in source text
- The Blimp- superhero name
- The Boss- character name, euphemism for Judaic-Christian deity God
- The Captain- character name
- The Cat in the Hat- name in source text
- The Cat- identified as such at Henson.com Featured Creature and in Designs and Doodles
- The Defroster - superhero name
- The Devil- common prefix for theological figure
- The Duchess- name in source text, nobility
- The Easter Bunny- full title for mythical figure
- The Gambler- title character in Kenny Rogers' song
- The Geefle- title character in "The Story of the Geefle and the Gonk."
- The Glutton- name in sketch title, Ed Sullivan intro
- The Gonk- title character in "The Story of the Geefle and the Gonk."
- The Great Potato- deity name
- The Grinch- character name in source text
- The Gryphon (Dreamchild)- character name in source text
- The Hat- identified as such in credits
- The Job Wizard- identified as such in credits
- The King - nobility title
- The King of Id- nobility, character name in source text, though often simply called "The King."
- The La Choy Dragon- introduces himself with "I'm the La Choy Dragon!"
- The Mad Hatter- name in source text, sometimes simply called "The Hatter."
- The March Hare (Dreamchild)- name in source text
- The March Hare (Muppet Show)- name in source text
- The Mudman- listed as such in books
- The Newsman- official character name, used in Palisades Toys' action figure and elsewhere
- The Pied Piper- character name in source fairy tale
- The Pink Panther- official cartoon character name
- The Prince of Phumph- nobility title
- The Procrastinator- superhero name
- The Queen of Phumph- nobility title
- The Queen- nobility title
- The San Francisco Earthquake- wrestling name
- The Six Dollar Man- name in dialogue, take off of "The Six Million Dollar Man."
- The Sphinx- common name for famous landmark
- The Spook- official character name in The Wizard of Id comic
- The Stepmother- common title in fairy tales
- The Swedish Chef- official character name, used everywhere
- The Watch Dog- superhero name
- The Whale- identified as such in presskit
- The Wiseman- identified as such in credits
- The Witch Doctor- title character in song
- The Wizard (Wizard of Id)- name in source text
- The World's Oldest Fraggle- always referred to as "The World's Oldest Fraggle" or occasionally "The World's Oldest"
- The Worm- identified as such in credits
- The Fastest Person in the Kingdom - called such in sketch dialogue
- The Smallest Person in the Kingdom - called such in sketch dialogue
- The Smartest Person in the Kingdom - called such in sketch dialogue
- The Tallest Person in the Kingdom - called such in sketch dialogue
- The Aristocrats- band group name
- The Benedictine Monkees - band name
- The Bookworms - band name
- The Country Trio- band group name
- The Cute and Fuzzy Four- band group name
- The Cute But Not So Fuzzy Four- band group name
- The Dirt Sisters- listed as such in articles about "City Kids."
- The El Sleezo Cuties- name listed in billboard
- The Electric Three- band name
- The Endangered Species Chorus Line- band name, mentioned in dialogue
- The Extremes- band group name
- The Falling Alfonsos- group name
- The Flying Zucchini Brothers- family group name
- The Gogolala Jubilee Jugband- band name
- The Leprechaun Brothers- band name
- The Merrill Lunch Hungerdunger McCormack All Accountant Marching Society- society name
- The Minstrels - band name
- The Muppet Glee Club - band name
- The Mutations- band name
- The Oinker Sisters- band name
- The Simpsons- official family name and show title
- The Squirrelles- band name
- The Tarnish Brothers- band name
- The Teeterini Family- group/family name
- The Three D's- band name
- The Three Elmos- band name, referred to as such in dialogue
- The Three Little Pigs- common fairy tale name
- The Danceros -- announced by Kermit specifically as "The Danceros"
- The March Hare (Muppet Show) -- from author's text
- The Newspig -- variation on The Newsman
- The Old Lady Who Swallowed a Fly- title character in song
- The Swedish Pig -- variation on The Swedish Chef
- The Busby Twins - family name, referred to as such in The Sesame Street Dictionary
- The Refined Young Cannonballs- band name
- The Sesame Street Cobblestones- band name, listed as such in album credits
- The Vile Bunch- band name, text from a Muppet Annual
Questionable
- The Monkey King- listed in credits as "Monkey King" but in dialogue and in print sources as "The Monkey King"
- The Sandwich- never addressed, not listed in credits
- The Cowardly Lion- listed in film credits as "Lion" and called "lion" in most dialog; but in most texts with "The"
- The Scarecrow- name with "The" in source text; listed as "Scarecrow" in film credits and called "Scarecrow" in dialog"
- The Wicked Witch of the East- name in source text; listed as "Witches" in credits
- The Wicked Witch of the West- name in source text; listed as "Witches" in credits
- The Wizard- named with "The" in source text; listed as "Wizard" in film credits
- The State of Indiana- refers to itself as "Indiana" in dialogue; Sam Eagle refers to it as "The State of Indiana" in disclaimer
- The Beetles- often listed in album credits as "The Sesame Street Beetles."
- The Female Singers- never addressed, fan-created name
- The Primitives- referred to as such in NY Times article, never actually used
- The RX Twins- also known as ""The Pak-Nit RX Twins."
- The Teppums- in contrast to The Muppets
- The Hipster- fan created name
- The Devils- listed in credits as "Devils"
- The Mop Dancers -- announced by Kermit as "Alfredo and Hildegard, The Mop Dancers"
- The Square- fan created name
- The Beast- referred to by Tosh Fraggle as "my beast" or "my pet beast."
No source (or at least not listed yet)
- The Announcer
- The Cheese
- The Christmas Turkey
- The Cloverland Dairy Cow
- The Dancing Clown
- The Eel
- The Elephant
- The Floating Face
- The Gagtoothed Groan
- The Germ
- The Glox
- The Lion
- The Messenger
- The Miller's Daughter
- The Music Store Owner
- The Old Woman Who Lived in a Nine
- The Showman
- The Snail
- The Snowman
- The Turkey
- The Babies
- The Bouncing Borcellino Brothers
- The Bun-Bun Brothers
- The Clodhoppers
- The Dancing Sacks
- The Fazoobs
- The Fuzz Brothers
- The Gingerbread Men
- The Mexican Hat Dancers
- The Motorettes
- The Muppaphone
- The Muppet Orchestra
- The Rock Lobsters
- The Snorers' Chorus
- The Snowths
Should lose the "The"
- The Frackles - Frackles
- The Snerfs - Snerfs
- The Stepsisters- referred to in dialogue as "Lisa" and "Mona" (or Mona and Lisa), should probably be moved