Charlie the ChefThe chef who owns Charlie's Restaurant.
- He Who Must Not Be Seen: He is only mentioned by Grover.
- Suddenly Voiced: Charlie was usually a silent character. But in the Russian restaurant skit, he replied to Grover, "NYET!" That means "NO!" in Russian. He says it when they are out of those certain foods.
Mrs. JohnsonThe wife of Grover the Waiter's costumer: Mr. Johnson.
- He Who Must Not Be Seen: She has been never seen in puppet form, though in one segment, Mr. Johnson brought in a painting of his wife to the frame shop to put in a picture frame.
- Vague Age: She looks elderly, but her husband is middle-aged.
SpencerThe kid who was going to be the fourth Birdketeer for The Number 4 Dance in the Dances from All Over The World Day episode on Sesame Street. Unfortunately, Celina got a phone call from Spencer's mother and she informed Celina that Spencer is sick and is unable to attend Dances from All Over The World Day.
- Suspiciously Similar Substitute: Ruthie fills in for Spencer on The Number 4 Dance.
- Joey Mazzarino
One of Abby's classmates in "Abby's Flying Fairy School" who's half-troll and half-fairy.
- Cloud Cuckoo Lander: Likes gross things like earwax and belly button lint and does other wacky things too.
- Deep Sleep: He once fell under an enchanted sleep from eating a poisoned apple.
- Half-Breed Angst: Blogg is half-troll and half-fairy, so he lives in a troll town but goes to a fairy school. He doesn't mind being half-troll at the fairy school, but when his classmates and teacher visit his hometown with him, he denies that he's half-fairy to the citizens and hides his wings.
The little boy who appears in the Captain Super Ultra Mega Smile Man shorts.
- Audible Gleam: Not as often as Captain Super Ultra Mega Smile Man, but his teeth sometimes go "ding!" when he smiles.
- Sweet Tooth: He's shown eating a giant lollipop in one skit.
- Andrea Martin
A TV star who sometimes appears in "Elmo's World".
- Ambiguously Related:
- She could be related to Doc Martin, the redheaded woman who also appears on TV in "Elmo's World".
- If she is related to Doc Martin, she could also be related to Handy Mandy and Marla Perkins (who both look just like Doc Martin but with no glasses), the elderly woman who also looks like Doc Martin, and the "Up-and-Down Lady" who looks like a blonde, glasses-less version of Doc Martin.
- Animal Lover: Implied. Three of her lectures are about animals and she seems to like doing them.
- Cat Girl: She's usually just a normal human woman, but she grows a cat tail and whiskers at the end of her cat song.
- Genki Girl: She's very enthusiastic and loud.
- Meaningful Name: Her name is Bubbles and she's energetic, i.e. "bubbly".
- Massive Numbered Siblings: Her cat song reveals that she has octuplets.
A blue monster who appeared in several PSA cartoons about Covid-19.
- Butt-Monkey: All we know of him is that his father caught covid-19, and then when the father recovered, their neighbour died from what's implied to be the same disease.
- Everyman: His purpose was to provide a role similar to that of kids who were affected by Covid-19.
- Vague Age: We don't know his age; just that he's a kid.
Captain Super Ultra Mega Smile Man
A superhero who appears in a series of animated skits to discuss dental hygiene.
- Audible Gleam: Because the idea of clean teeth is his thing, his teeth make a "ding" noise that is even heard by Bobby when he smiles.
- Mundane Made Awesome: He's a superhero based on tooth-brushing!
- Overly Long Name: His title is six words, which causes Bobby to have a hard time remembering it and suggest he shorten it.
- Superheroes Wear Capes: He wears a cape and is a superhero.
- Michelle Mariana
A round, claymation creature with lips but no eyes.
- Breaking the Fourth Wall: Once sang a song about how she's going to "get to" the viewer.
- Cartoon Creature: Her species is unknown.
- Cloud Cuckoolander: In her song "The Game of Make-Believe" she pretends to dance with a mango in a chocolate ocean.
- Ms. Imagination: Has a strong imagination, as evidenced in her song "The Game of Make-Believe".
- Shapeshifting: Can twist herself into different shapes.
- Sizeshifter: She can stretch herself out to make herself bigger.
- Voluntary Shapeshifting: She can change her shape.
- Andrea Martin
A woman who, like Bubbles Martin, appears on TV in "Elmo's World". She has many aliases including "The Bird Lady" and "The Weather Lady" but her real name was revealed in the skit about doctors.
- Ambiguously Related:
- She has the same job and surname as Bubbles Martin, meaning she could be related to her in some way.
- There are also several others who look like her and have appeared on TV with similar shticks, but are not her: Handy Mandy and Marla Perkins look just like Doc Martin but without glasses (and the "Jumping Lady", "Friend Lady", and "Construction Lady" also don't wear glasses, so it's unknown if they're Mandy, Marla, or some different women altogether), a lady who calls herself the "Dog Lady", "Pet Lady", and "Open and Close Lady" looks just like Doc Martin but elderly, and there's also the "Up and Down Lady", who looks like Doc Martin but with blonde hair and no glasses.
- Animal Lover: Is shown interacting positively with animals in some of her appearances.
- Friend to Bugs: One of her aliases is the Bug Lady.
- In-Series Nickname: As well as "The [whatever] Lady", she has a nickname "Bones" related to her palaeontology gig.
- Jack-of-All-Trades: Her skills include dancing, singing, giving TV lectures, sports, babysitting, entomology, ornithology, palaeontology, medical work, and, of course, giving TV lectures.
- Job Song: "Do the Doctor" is about her work as a doctor.
- Labcoat of Science and Medicine: Wears a white lab coat when she works as a doctor.
- Shaking the Rump: In her dinosaur dance, she shakes her butt, pretending to have a tail.
- Spell My Name with a "The": She usually goes by "The [whatever] Lady".
- Jeremy Redleaf
One of Abby's classmates in "Abby's Flying Fairy School".
- Character Tics: He turns invisible when afraid.
- The Eeyore: Is a bit of a pessimist.
- Limited Wardrobe: Always wears an orange and yellow striped hoodie.
- Phrase Catcher: When he disappears, Mrs Sparklenose will ask where he is and his classmates will say, "He's gone again".
- You Gotta Have Blue Hair: His hair is green.
Heithcliff, Sheila, and the It
Two children who wear "He" and "She" on their shirts, and their giant, talking pet with "It" on its belly, who teaches them how things work.
- Ambiguous Gender: The It is only referred to as an "it", but it has a deep voice like a man.
- Cartoon Creature: The It's species is indeterminate.
- Phrase Catcher: The It causes Heithcliff and Sheila to say, "The It really knows how it works!".
- Signing Off Catchphrase: The phrase "The It really knows how it works" is said at the end of each segment.
- Spell My Name with a "The": The pet is called The It.
A superhero who Baby Bear draws and he comes to life.
- Catchphrase: He says, "You're the artist" to Baby Bear.
- Crying a River: In one skit, he and Baby Bear work together to cry an entire ocean.
- Crying Critters: Despite being a bear, he is able to cry. In fact, he once cried an entire ocean when Baby bear forgot to draw one when they were planning to sail on their pirate ship.
- Elmuh Fudd Syndwome: He pronounces his "R"s as "W"s just like Baby Bear.
- Fully Dressed Cartoon Animal: Wears a full outfit and is an anthropomorphic bear.
- Meaningful Name: As his theme says, he's a hero and a guy.
- Not Quite Flight: He can fly with the propeller on his hat.
- Phrase Catcher: He prompts Baby Bear to say, "What a hero! What a guy!".
A little girl who features in two animated skits.
- You Gotta Have Blue Hair: Her hair is purple.
An animated girl who lives in an apartment.
- Cheerful Child: Has a very positive attitude.
- Ms. Imagination: Nearly all her skits have her imagine something.
- Sick Episode: One skit is titled "Madlenka Gets a Cold".
- Jessica Stone
Abby Cadabby's preschool teacher in the "Abby's Flying Fairy School" skits.
- Butt-Monkey: Often gets into scrapes due to her small size.
- Meaningful Name: Her surname is "Sparklenose" and her nose lights up when she sneezes.
- Slapstick Knows No Gender: She's female and, due to her small size, is often the victim of slapstick.
- Plot Allergy: Is allergic to fairy dust bunnies.
- Power Incontinence: Not normally, but when she sneezes she loses control of her powers.
- Tyler Bunch
The class pet in "Abby's Flying Fairy School", a gerbilcorn (gerbil-unicorn hybrid).
- Big Eater: He will eat pretty much any food he can get his paws on.
- Meaningful Name: His name is Niblet and he eats a lot.
Noodles and Nedd
A man (Nedd) and a cat (Noodles) who have wacky misadventures.
- Amazing Technicolor Population: Nedd is a yellow-skinned human.
- Amazing Technicolor Wildlife: Noodles is a purple cat.
- Edible Theme Naming: The cat is called Noodles.
- My Nayme Is: Nedd spells his name with two "d"s.
- Nearly Normal Animal: It's unclear where Noodles falls on the Sliding Scale of Anthropomorphism. He plays instruments, sometimes walks upright, plays with toys and thinks like a human child at times, but he also eats out of a pet bowl, walks on all fours most of the time, and meows instead of speaking.
One of Abby Cadabby's classmates in "Abby's Flying Fairy School", a fairy chicken.
- Intelligible Unintelligible: She can't talk, only cluck, but Abby understands her.
- A Lizard Named "Liz": Is named Peck and is a chicken.
A blue circle that acts like a dog and shows video clips to help the students in "Abby's Flying Fairy School".
- All Animals Are Dogs: He barks and plays fetch.
- Cartoon Creature: His species is a mystery.
- The Faceless: Has no facial features to speak of.
- Phrase Catcher: When the students want his help, they say, "Fetch, Spot, fetch!"
SpottyBobby's dog who appears in the Captain Super Ultra Mega Smile Man shorts.
- Meaningful Name: Is named Spotty and she has spots.
Suzie Kabloozie and Feff
- Ruth Buzzi
Suzie is a little girl, and Feff is her cat.
- A Day in the Limelight: One season 32 episode was basically dedicated the duo. Several of their sketches were shown, they introduced segments hosted by other characters, and they even presented both the Letter and Number of the Day. The plot of the episode itself had Zoe become obsessed with Suzie and wanting to be just like her, even wearing her own version of Suzie's beret and essentially forcing other characters to play the role of Feff.
- Amazing Technicolor Wildlife: Feff is a green cat.
- Be Careful What You Wish For: In her debut short, Suzie wishes that everything that begins with "f" would go away. She changes her mind when it does.
- Berserk Button: Suzie used to hate the letter 'f' with a passion but she no longer hates it.
- Hold Up Your Score: Feff does this after Suzie says of the preceding insert, "That was great! Let's see what the judge says!" The "score" is invariably the day's featured number.
- Large Ham: Suzie can be pretty dramatic.
- Limited Wardrobe: Suzie always wears her grey dress.
- Ms. Imagination: Suzie has a vivid imagination, which she sings about in the song "I Can Do It in My Head".
- No Indoor Voice: Suzie is very shouty most of the time.
- Vitriolic Best Buds: They are very good friends despite occasionally annoying each other.
Teeny Little Super Guy
- Jim Thurman
An animated stop-motion character of a cel character drawn in a cup, who helps other kitchen object characters learn basic childhood skills.
- Every Episode Ending: At the end of each Teeny Little Super Guy episode, he returns to the rotating cabinet of a kitchen as the last verse of his theme song plays. And Teeny Little Super Guy would sing "OH, YEAH!" And the cabinet closes.
A talking typewriter with eyes, arms and wheels. He appears in 26 sketches, one for each letter of the alphabet.
- Animate Inanimate Object: It's an animate typewriter
- Catchphrase: "Nooney-Nooney-Noo!"
- Rubber Hose Limbs: His arms bend whatever way they need to.
A character who features in three songs with environmental messages. He chops down trees and litters, and the songs tell kids not to do what he does, because the world would be terrible if every kid did what Willie does.
- Alliterative Name: Willie Wimple.
- The Pig-Pen: One of his defining traits is his tendency to litter.
- Vague Age: He's referred to as a kid, but he can go on a boat on his own.