A heterogeneous group of furry creatures, many of whom share the last name "Monster".
- Benevolent Monsters: The majority of them are friendly.
- Intelligible Unintelligible: A few of them (e.g. Frazzle, Mel and the Two-Headed Monster) speak in a strange gibberish. Other monsters who speak human languages are able to understand them.
- Our Monsters Are Different: They may all technically be from one species, but they all share radically different fur colors, shapes, and heights.
- Species Surname: Many have the last name "Monster".
- Frank Oz
The host of Monsterpiece Theatre. He is basically Cookie Monster in a red robe and wears a pipe in his mouth.
- Big Eater: He snacks on cookies off screen during the entirety of the Monsterpiece Theatre opening, with crumbs spilling over the title.
- Catchphrase: "Good evening, And welcome to Monsterpiece Theatre. Me your host, Alistair Cookie."
- Do Not Adjust Your Set: While running Monsters With Dirty Faces, He tells viewers not to adjust their TV sets, because the movie is in Black and White.
- Edible Theme Naming: His last name is Cookie.
- Meaningful Name: The "Alistair" part is not really meaningful unless you count the celebrity reference, but his surname points out his resemblance to Cookie Monster and his love of cookies.
- No Celebrities Were Harmed: He is based on Alistair Cooke, the host of Masterpiece Theatre. The character continued to be used well past Cooke's retirement from the position in 1992.
- Cooke himself wryly appreciated the spoof. At a 1991 dinner celebrating the 20th anniversary of Masterpiece Theater, he predicted that if he was remembered at all, he would be best remembered by fans of Sesame Street as "Alistair Cookie, the Cookie Monster of Monsterpiece Theater."
- Only Sane Man: Sometimes acts as one to the cast and crew of Monsterpiece Theater, especially in segments where they air the wrong movie and he was the only one aware of it.
- You No Take Candle: Just like Cookie Monster, he says, "me" instead of "I" and omits words like "is" and "am".
The three Muppet monster dancers who appeared in the 1990s. They sometimes dance with humans.
- Jerry Nelson (lead singer)
They sing Love the Ocean, A song that teaches everybody not to throw trash into the ocean.
- Kevin Clash
An angry chef monster who scolded Cookie Monster and his father after they shared the cookies intended for the other monsters present in the Monsterpiece Theatre segment, "Conservations with my Father."
- One-Shot Character: He was never seen outside "Conservations with my Father."
- Frank Oz (1969-2004)
David Rudman (2001-present)
The very incarnation of gluttony. He loves cookies more than anything, but has been seen talking about "healthy" food, so kids can make good decisions on eating the right foods for them. Starting in Season 44, Cookie Monster has been appearing in segments titled Cookie's Crumby Pictures, in which he is shown as the lead role for a parody of a popular movie.
- Anti-Role Model: He eats terrible, unhealthy food nonstop, and he's proud of it. However, he does stress the importance of healthy food. Then again, he also eats non-food.
- Ascended Meme: Cookie Monster's "OM NOM NOM!" catchphrase has become a meme, something that was brought up on the show with Cookie Monster wondering why he hasn't received any royalties for it.
- Baby's First Words: The book "Me Cookie" reveals that "cookie" was his first word.
- Big Eater: He can and will eat just about anything and he rarely appears full up.
- Big Word Shout: Occasionally, he will shout "Cowabunga." He is also known to shout the name of things he's planning to eat.
- Characterization Marches On: He behaved more like a toddler in the first season: he often interfered with others (though unaware he was doing so), was occasionally fussy when he didn't get his way and was scolded by other characters when he misbehaved. It wasn't until his song "C is for Cookie" in 1971 that Cookie Monster's personality was firmly established.
- Catchphrase: "COOOOOKIE!" "COWABUNGA!" and "OM-NOM-NOM-NOM!"
- Crazy Consumption: Usually found eating very quickly while eating cookies.
- Deadpan Snarker: Surprisingly. It's sometimes hard to tell with his Hulk Speak, but he can be quite sarcastic - complete with Aside Glances, even.
- Extreme Omnivore:
"That taste even better than Latin Grammy!"
- He even ate an Emmy during a tribute (and may or may have not eaten Stephen Colbert's Peabody Award.
- Foil: To Prairie Dawn for a while, particularly during the "Letter of the Day" skits, among others.
- Foregone Conclusion: Cookie Monster will eat any cookies that are near him, no matter how important they are. He's gotten better at being patient, though.
- Guttural Growler: His voice is distinctively deep and gravelly.
- Hidden Depths: He tends to come off as a dim-witted glutton, but as the years went by he started to be portrayed less dense and more single-minded. He's can be very clever when he wants to be, is a surprisingly talented artist (if he can resist eating his own paintings), has shown himself to be a big fan of high culture (host of "Monsterpiece Theatre" as the gentrified Alistair Cookie), and even got a few Deadpan Snarker traits over time.
- Hulk Speak: His speech is a cross between this and You No Take Candle.
- Idiot Ball: He's wacky, yes, but not normally stupid... except for one skit which had him worry that there was a monster on the toy chest, when he is one.
- Instant Web Hit: "Share it Maybe" got almost four million hits in four days.
- Isophagus: Cookie Monster swallows Kellan Lutz's cell phone while they're trying to explain the word "vibrate," becoming the perfect visual aid in the process.
- Jabba Table Manners: Cookie isn't remotely evil, but his eating habits do reflect poorly on him.
- Large Ham: Being originally performed by Frank Oz, Cookie has had numerous hammy moments.
- Leitmotif: A short, instrumental version of "C Is for Cookie."
- More Teeth than the Osmond Family: In his earliest appearances, he had fangs.
- Nightmare Sequence:
- In one episode, he has a nightmare about floating, singing cookies.
- In one episode, he dreams about a monster that turned into a cookie from eating too many cookies.
- Only Known by Their Nickname: According to the song "The First Time Me Eat Cookie", his name was Sidney before he started eating cookies - the "Cookie Monster" appellation was just a nickname that stuck. His name being Sid also gets a mention in this video where the Sesame Street characters answer questions from Google.
- Oral Fixation: A very common gesture for Cookie Monster when he's excited or hungry and there's no food (or other non-food object Cookie's interested in eating) around is for him to start chewing on his own fingers.
- Out-of-Character Moment:
- In the "Take a Rest" song, he mentions needing a nap after eating, which he generally does not.
- On two occasions, he has become afraid to eat cookies because of nightmares. However, both times, it only lasted a few moments.
- The Sesame Street Dictionary shows him not wanting cookies to illustrate the word "unusual".
- Parental Bonus: The undisputed king of this trope. If Sesame Street makes a clever pop-culture reference, chances are it comes from him.
- Sick Episode: He got a disease called "Cookie Flu" in one episode, which was not at all like regular influenza and its only symptom was uncontrollable sneezing at the sight of cookies. It went away the moment he stopped thinking about cookies.
- Signature Song: C is for Cookie (That's good enough for me)....
- Trademark Favorite Food: It's right there in his name: cookies. He loves cookies.
- Trash the Set: He sometimes does this by eating the set.
- Vague Age: He is seen wandering around alone and occasionally working, but speaks in primitive grammar, has a packed lunch in one promotional video, and calls his mother "mommy". In "Take a Rest", he claims he takes naps, although he's never been seen taking naps outside of that song.
- You No Take Candle: His well-known speech pattern is his bad grammar.
- Jerry Nelson
She is Cookie Monster's baby cousin who appeared in a sketch where Cookie Monster was trying to feed her cookies. But would not want to eat one. Then Ernie appears with some groceries filled with fruits and vegetables (which Cousin Monster would go with). Cookie Monster complains that he loves cookies, But his baby cousin would not touch it. And Ernie explains maybe she does not like cookies, And told Cookie Monster that he has to feed his baby cousin something else.
- Jerry Nelson
He's the father of Cookie Monster who appeared in the Monsterpiece Theatre segment: "Conservations with my Father". As he teaches Cookie Monster about environment.
- One-Shot Character: He only appeared in the "Conservations with my Father" sketch.
- Trademark Favorite Food: He shared a plate of Cookies with Cookie Monster until he got in trouble with Chef John and the other monster scolding those Cookies were for the other monsters present. As they chase around in a chaos and into Alistair Cookie's living with the conclusion ("This Alistair Cookie's father saying, That's My Boy!")
She appeared in several episodes.
- Borrowed Catchphrase: In one Letter of the Day segment, she borrowed Cookie Monster's "cowabunga" catchphrase.
- Hypocrite: Tells Cookie Monster not to eat the Letter of the Day Cookie, then eats it with him.
- Large Ham: Is seen doing a dramatic fake-faint in "The First Time Me Eat Cookie" and doing the same hammy "cowabunga" jump as Cookie Monster in a Letter of the Day skit.
- Like Mother Like Son: Her eating habits and speech patterns are a lot like her son's.
- You No Take Candle: She has the same primitive grammar as her son.''Do not eat cookie, son!"
- Performer: Karen Prell
An energetic, pink monster who has red hair, wild rolling eyes, and a passion for play. She lives in a cave with her caretaker, Pearl.
- Genki Girl: She takes her energy to extremes rarely met by the other Sesame Street monsters, which is unsurprising, as the performer of Deena would later become best known for portraying Red Fraggle on Fraggle Rock.
- Put on a Bus: Writer Norman Stiles says he created Deena, named after one of his friends, to emphasize the role of play in the development of the brain at a time when it was not promoted widely. Stiles would eventually recall that "for whatever reason, as we tried the character in a few sketches, Deenas insistence on playing was more annoying than amusing." However, Karen Prell believed her own performance of the character, which was deemed "over-the-top" in an interview, led to her short time on the series. Regardless, both Deena and Pearl saw dramatically reduced roles starting in the twelfth season, and one of their last known appearances together was in the wedding sequence of The Muppets Take Manhattan. The Deena puppet would eventually morph into the character of Humphrey.
- Third-Person Person: "DEENA WANTS TO PLAY!"
- Various (197?-1984)Kevin Clash (1984-2012)Ryan Dillon (2012-present)
A 3½-year-old monster who speaks in a high-pitched voice and eschews pronouns. Host of the "Elmo's World" and "Elmo: The Musical" segments and the object of 1996's Tickle-Me-Elmo craze.
- All-Loving Hero: He likes everyone. "Elmo loves you."
- Aside Glance: Whenever Zoe is talking to Rocco, he turns to the camera.Elmo: "Elmo doesn't believe this."
- Baby Talk: Elmo's general form of speech, particularly to babies.
- Breakout Character: He first appeared as a background character in the early '80s. He's now one of the show's most dominant characters.
- Catchphrase: He says, "Elmo loves you" a lot.
- Characterization Marches On: In his earlier incarnations in the early Eighties, he was basically a presumably-adult monster with a deeper, nasally, squawky voice who showed up every so often. Then, during Richard Hunt's stint, he was like a rowdy caveman (sounded a lot like Two-Headed Monster). When Richard, who hated doing Elmo, literally tossed the Muppet to Kevin Clash, Elmo was retooled as the bouncy, high-voiced, sweet-natured child-monster we know today.
- Cheerful Child: Elmo is a kind monster, is pretty upbeat, and is three years old.
- Cuddle Bug: He's very hug-friendly.
- Dub Name Change: Takalani Sesame, the South African version of the series, changes his name to Neno.
- Friend to All Children: He kisses a lot of babies.
- Gone Horribly Right: Elmo gives a lecture on different ways that people sleep. The audience is so receptive that he can't sleep when it's over.Elmo: Go home!
- Iconic Sequel Character: Over the years, he's become so iconic and so famous, that it might be hard to remember that he was introduced in season 12. It's tough to impossible to imagine modern-Sesame Street without him.
- Little Mr. Snarker: Rarely, but he can't help making sardonic remarks in regards to Zoe's pet rock, which he really doubts is alive.
- Military Brat: Yes, believe it or not. This was central to a series of videos specifically made to help military children cope with having a parent deployed, so he subverts most of the typical, negative stereotypes.
- Mr. Imagination: Has lots of imagination spots, especially in Elmo's World.
- Never Learned to Read: Still illiterate due to being only three years old.
- No Name Given: He was a minor background Muppet simply known as "Baby Monster" before 1985, when his current character started to take shape.
- Nice Guy: One of the nicest characters of the show, being cuddly and sweet natured.
- One Episode Fear: He was afraid to go into Hooper's Store during the episode it caught fire.
- Only Sane Man: Or rather Only Sane Monster. Whenever Zoe appears with her pet rock Rocco, he is the only character that does not take the rock seriously and has to remind Zoe that, "He's a rock!" Mostly, this is because he believes Zoe is getting her way.
- Precocious Crush: One story concerns Elmo naively wanting to marry Gina. On learning this, she explains to him that she does love him very much, but that the relationship they have is "a 'friend' kind of love."
- Red Is Heroic: Has red fur and is very nice.
- Series Mascot: Possibly the most well known Sesame Street character, he's shown on a lot of merchandise.
- Sick Episode:
- He gets earache in "Elmo Visits the Doctor".
- One toy of him involves him with a cold.
- One licensed game involves him with either a cold, toothache, or earache.
- Signature Laugh: His high-pitched laughter drove a toy craze in the mid-1990s when it was matched with a doll of Elmo.
- Signature Song: This is a Song, La-la la-la, Elmo's Song....
- Sudden Anatomy: His eyelids appear when he's sleepy.
- Third-Person Person: He always refers to himself in as "Elmo" instead of "I" or "me."Elmo: And Elmo's Elmo.
- He will also sometimes refer to someone he's talking to directly in the third person, for example, "Elmo thinks Abby could ask Julia to play again" instead of "I think you could ask Julia to play again."
- Toilet Training Plot: A flashback in "Elmo's Potty Time" showed him a year ago being potty trained.
- Richard Hunt
A purple muppet monster who sang Comb Your Face.
- No Celebrities Were Harmed: He is based on country singer Ferline Husky.
Herry's younger sister.
- Sick Episode: She catches an illness in the book "It's No Fun Being Sick".
- Jerry Nelson (regularly)
Martin P. Robinson
An orange monster with big teeth.
- Dark Is Not Evil: Has horns, thick eyebrows and fangs, but is actually friendly.
- Hulk Speak: Well, In the song Frazzle, The Frazzletones sings about the weird noise as when Frazzle's emotion is. At once Frazzle talked once in the Disco segment where the song is about In and Out. He asked "Excuse me, Is this the home of Sesame Street Fever?"
- Picky Eater: Sometimes when eating croissants, he refuses other foods.
- Trademark Favorite Food: Likes croissants because they remind him of his horns.
- The Unintelligible: Speaks mostly in gibberish, although will sometimes speak English.
They sing Frazzle's Emotion, A song about Frazzle and his emotion. One of the members looks a lot of Chrissy from Chrissy and the Alphabeats. And the other member was named Maurice Monster.
- One-Shot Character: They never appeared outside the song.
Elmo's uncle Fergus, aunt Funella, and cousin Phoebe, who run a hotel.
- Alliterative Family: Downplayed. Fergus and Funella have names beginning with F, but Phoebe's, though it sounds the same, begins with P-H.
- Alliterative Name: Their names begin with F or P-H and their surname is Furchester.
- Breaking the Fourth Wall: They sing to the audience at the end of all their skits.
- Determinator: They have a whole song about their not giving up.
- "Do It Yourself" Theme Tune: They, along with Elmo and Cookie Monster, sing the Welcome to the Furchester Hotel song.
- Ending Theme: They sing a song about "don't check out" at the end of each segment.
- Lost Voice Plot: In "Animal Talk", Phoebe loses her voice, so they have to find a way to communicate with the animals.
- Lyrical Dissonance: The "Don't Check Out" song begs you not to leave, but to a cheerful melody.
- Meaningful Name: They have "fur" in their last names, and are furry monsters.
- Odd Name Out: Phoebe's the only one whose name doesn't start with F.
- Solemn Ending Theme: Zigzagged for "Don't Check Out". Its lyrics beg the viewer not to go and claim that they will be less furry without them, but it has a merry tune.
- Something Itis: In one episode, Phoebe gets "Monster Mumble-itis", which is apparently what monsters get if they talk too much.
- Speaks Fluent Animal: Phoebe can talk to animals, however, her parents cannot.
- Warrick Brownlow-Pike
A marble-mouthed monster chef who first appeared on The Furchester Hotel before joining the domestic show for the "Cookie Monster's Foodie Truck" segments
- Ascended Extra: His first appearances on Furchester were simply banging a gong to signal Monster Tea Time. By the second season, he gained a much more prominent role as the hotel chef. From there, he became the co-star to the new Cookie Monster segment, "Cookie Monster's Foodie Truck." Within a couple of short years, he now has merchandise and walk-around versions in parks and live shows.
- Straight Man: To Cookie Monster
- Frank Oz (1970-2012)
Eric Jacobson (1998-present)
A well-meaning, multitalented monster who suffers more humiliation and injury than the rest of the cast combined. He also goes as a superhero named Super Grover. (He became Super Grover 2.0 in 2010.)
- Affectionate Parody:
- "SUP...ER GROVER!" parodies characters from the Superhero genre, with the absurd outfit and hammy tendencies of many of those characters.
- "Look at yourself. Now back to me. Now back to yourself. Now back to me. Sadly, you are not a monster..."
- The "Near & Far" sketch gets parodied itself quite a bit.
- This stint as a Disco Dancing Royalty ala Saturday Night Fever.
- The sketches in the restaurant underwent Memetic Mutation via The Daily Show with Jon Stewart.
- Amusing Injuries: Moreso than any other character, he ends up injured for comedy, often thanks to the ridiculous stunts he tries to pull off.
- Butt-Monkey: Gets put through a lot of injuries and misfortune.
- With the exception of his sketches with Mr. Johnson, in which it's usually the latter who ends up the Butt-Monkey. Ditto his appearances with Kermit.
- Blue Is Heroic: Has blue fur and is a kind hearted sort.
- Can't You Read the Sign?: After Mr. Johnson complains to Grover the Flight Attendant that he's bored and has nothing to read.
- "Hel-lo dere! This is your lovable little furry pal, Grover!"
- To Kermit: "HEEEEEEEEY, FROGGY BAYBEEEEE! [*backslap*]"
- Character Tics:
- Will fall over when he's very emotional.
- Always says "super" in this particular way.
- Determinator: The limits to which he pushes himself are actually quite admirable.
- Fainting: Grover does this a lot (although it could be interpreted as pretending to faint).
- Flying Brick: Super-Grover apparently believes he's one of these, judging from how often he tries to bend bars and lift heavy objects. He actually is capable of flight, but takeoffs and landings are a problem for him.
- I Can't Hear You: In the 1970 sketch on The Ed Sullivan Show that definitively established Grover as a character, he interrupts Kermit's song by loudly strumming on a banjo. When Kermit asks why he's playing a banjo, Grover responds "I can't hear you, I'm playing the banjo."
- Jack-of-All-Trades: Has several jobs, including waiter, taxi driver, and flight attendant.
- Keet: Grover is highly enthusiastic. "HELLLLLLOOOOOOOOOOO EVERYBODEEEEE!"
- The Klutz: Is a bit clumsy and accident-prone.
- Know-Nothing Know-It-All: Depending on the sketch. In solo scenes, Grover is usually rather knowledgable about the subjects he's presenting. But, when paired with someone else or in one of his many guises (superhero, professor, marshal, camp counselor, etc.), he's usually not as much of an expert as he claims to be.
- Large Ham: One of the hammiest of the Muppet monsters. It helps that Frank Oz performs him.
- Named After Somebody Famous: Grover was named after U.S. President Grover Cleveland.
- Nice Guy: He truly does mean well.
- Precision F-Strike:
Grover: I do not know what the hell that means.
- When he appeared with other Muppets performed by Frank Oz in An Evening with Jim Henson and Frank Oz, in response to a marionette question.
- And the odd viral moment at the end of 2018 when half the internet was convinced that a clip of Grover saying "That sounds like an excellent idea!" included an F-bomb.
- Secret Identity: For a certain value of "secret." He tries to convince others he and Super Grover are unrelated.
- Spock Speak: According to original performer Frank Oz, Grover doesn't use contractions (except in songs) because he's obsessed with doing everything right.
- Superheroes Wear Capes: Wears a red cape when he's being Super Grover.
- That Makes Me Feel Angry: "I feel so ______!" is one of his recurring lines, to enthusiastically express whatever emotion he happens to be feeling at the moment.
- Vocal Evolution: In the first season Grover (who spent most of the season nameless, outside of being called "Fuzzyface" a few times) and Cookie Monster weren't distinct characters yet, and Frank Oz used an almost-identical voice for both. It was up to later on in mid- or late-second season that Grover got his more distinct and familiar voice. As Oz got older, Grover's voice noticeably deepened a bit, to the point that it started sounding a little like a gravelly Miss Piggy.
- Why Do You Keep Changing Jobs?: Poor Mr. Johnson keeps encountering Grover everywhere he goes: as a waiter, salesman, cab driver, flight attendant, telegram messenger, etc. Lampshaded more than once.
- Jerry Nelson (1970-2003)
Peter Linz (2015-present)
A large, blue monster. He's strong and has a gruff voice but he is very sweet. Always wanting to help out but usually inadvertently ended up breaking more than he fixed. Herry was a main character on the show from Season 2(1970-1971) until Season 31(2000).
- Badbutt: Was meant to be the "tough guy" among the cast. Being from a show for preschoolers, you obviously can't get too tough...
- The Big Guy: He's very big.
- Blue Is Heroic: A blue furred monster who is very nice.
- Demoted to Extra: This happened to him in the early 2000s.
- Does Not Know His Own Strength: Sometimes he accidentally breaks things with his strength.
- Extreme Omnivore: At least once he shared a bicycle with Cookie Monster - with share defined as both monsters eating it together, much to Kermit's chagrin.
- Guttural Growler: His voice isn't as growly as Cookie's, but still gruff.
- Gentle Giant: A strong, tall monster but a nice one.
- Half-Dressed Cartoon Animal: Wears only pants.
- "Metaphor" Is My Middle Name: Before singing "A Song for Two" with an Anything Muppet girl, he says "Cooperation" is his middle name. "Herry Cooperation Monster."
- Real Men Wear Pink: Herry, along with his tough-guy vibe, loves dolls and isn't the least bit ashamed of it.
- Sick Episode: At the end of "It's No Fun Being Sick", he catches Flossie's illness, but he recovers.
A family of monsters. Ingrid is the mom, Humphrey is the dad, and Natasha is the baby.
- Ambiguously Related: There's a monster named Freda played by Ingrid's puppet. Being related might explain the family resemblance.
- Affectionate Nickname: Ingrid and Humphrey call Natasha many pet names. They even sing a song about it in one episode.
- Babysitting Episode: Natasha gets babysat in several episodes.
- Baby's First Words: Natasha's first words were "Oh, dear" because that was what Snuffy had been saying while trying unsuccessfully to get her to talk.
- Baby See, Baby Do:
- Natasha's first words (oh dear) came from copying Snuffy.
- Natasha copies the Count when he sings to her in one episode.
- Inverted once, when Humphrey copies Natasha.
- Baby Talk: Natasha can't talk, only babble.
- Character Tics: Natasha blows raspberries a lot. She also has a habit of "shaking her shoe and going, 'cuckoo'" when she's happy.
- Cloud Cuckoolander: Let's just say that Humphry and Ingrid can be rather... dense. Much to the chagrin of most of the people on Sesame Street.
- Daddy's Girl: Humphrey and Natasha get along very well.
- Doting Parents: Ingrid and Humphrey think Natasha is amazing and fawn over everything she does.
- The Diaper Change: Natasha has her diaper changed in one episode.
- Happy Rain: They all like the rain.
- Litteral Minded: Ingrid and Humphry just do not understand the meaning of simple directions.
- One Episode Fear: One episode focuses on the characters finding out that Natasha is afraid of rain and correcting it.
- Why Did It Have to Be Snakes?: Natasha is scared of the rain for an episode.
- Steve Whitmire (Jack)
Louise Gold (Jill)
They sing Scratch my Back with Bip Bippadotta.
- One-Shot Character: They only appear in the song.
- Alliterative List: Has a list of "Seven 'C's" to do with her mother's addiction: she didn't cause it, she can't control it, she can't cure it, but she can help take care of herself, communicate her feelings, make healthy choices, and celebrate herself.
- Ambiguously Absent Parent: No sign of her dad.
- Companion Cube: Has a stuffed elephant named Elephant.
- Foster Kid: She was introduced living with a foster family.
- Fragile Flower: In her first appearance, she and Elmo were making placemats, and when it appeared hers went missing, and she breaks down in tears.
- Girlish Pigtails: Has these.
- Good Parents: Clem and Dalia, her foster parents, make sure that Karli feels safe and loved as their for-now daughter. Karli also has nothing but positive things to say about her own mom. Shes an addict, but shes working really hard to get better so she can do right by herself and her child.
- Heal the Cutie: A cutie like most Muppets who is in the process of healing. Karli has had a hard life (especially when you consider shes roughly Elmos age), but with help from her friends and grown-ups she can trust, shes making her way through to a better future for herself. For the real-world kids in Karlis situation, she is intended to show them that there is a light at the end of the tunnel.
- Junkie Parent: Her mother struggled with addiction, but fortunately is currently getting help and is in group therapy.
- Noodle Incident: We don't know what her mother got addicted to and how, though this is intentional as shes meant to stand in for any parental addiction instead of a more specific situation.
- Very Special Episode: Karli is not part of the mainline Sesame Street cast; she was created specifically for Sesame Street in Communities, a branch of Sesame Workshops outreach initiative to handle sensitive topics that parents and kids can seek out in specific situations instead of waiting for an episode on the topic to come up in PBS or HBOs rotation. Ocasionally, an outreach character is brought onto the show itself (Julia from the Sesame Street and Autism: See Amazing In All Children initiative, for example), but whether theyll do this with Karli remains to be seen.
- Bill Barretta (2006-2010)
Tyler Bunch (2007-present)
Elmo's father, who is a loving dad and ambiguously in the military.
- Good Parents: He, along with Mae, seem to be very supportive parents.
- Not So Above It All: Normally very level-headed, but he did sing a song about the potty in "Elmo's Potty Time". Truth in Television, some parents do sing to their kids to get them interested in potty training.
- Unexplained Accent: He and Mae have Southern accents, though Sesame Street is in New York.
- Jerry Nelson
A giant talking cookie who is, to put it simply, a personification of the phrase "You are what you eat". He appeared in the 1992 sketch, where Cookie Monster has a very sad nightmare after waring the last of his birthday cookies. He tells Cookie Monster his sad story on how he became a cookie. He used to a blue furry monster as well, but his cookie-only diet caused him to turn into a cookie, and he regrets sadly that he never had healthier foods. As Cookie Monster wakes up from his sad dream, he declares that he will never eat cookies again and starts eating carrots, fish, and whole wheat bread. But then he eats a cookie afterwards, with the remark "Well, maybe sometime a cookie!"
Four energetic monsters named Phoebe, Googel, Mel and Narf. They have a club called the Monster Clubhouse, where they do wacky things like get chased by elephants.
- Blinding Bangs: Mel's hair covers his eyes.
- Breaking the Fourth Wall: They often talk to the viewers.
- Cloud Cuckoo Lander: They have strange interests like being chased by elephants.
- Demoted to Extra: After Season 34, the Monster Clubhouse segments were discontinued since kids were not too familiar with the characters, resulting in the monsters becoming background characters.
- Department of Redundancy Department: Their "goodbye song" is just the word "goodbye" sung over and over.
- Ending Theme: At the end of the meeting, they will just sing "Goodbye" over and over, calling it the Goodbye Song.
- Extreme Omnivore: They'll eat almost anything during Snack Time, even things that aren't edible. Narf also ate a crash helmet once.
- Fake Interactivity: They often tell the viewers to join in with what they're doing.
- Genki Girl: Phoebe and Googel are extremely peppy. Mel and Narf are also Genki Guys.
- Half-Dressed Cartoon Animal: Phoebe wears a skirt but no pants. Averted for the rest of them, who just go naked.
- Intelligible Unintelligible: Mel can only speak gibberish, but the others can understand him.
- The Klutz: All of them are pretty clumsy, but Narf is the clumsiest.
- The Leader: Googel seems to be the leader of the group, she is often the one who will say what they'll do next.
- Messy Hair: Phoebe has hair that sticks out all over the place.
- Pun: Sometimes, Narf will fall from the ceiling and Googel will say, "Nice of you to drop by!".
- Spelling Song: When saying the name of their club, they will sing to the tune of Old MacDonald, spelling out "Monster Club" but saying "house".Monsters: "M-O-N-S-T-E-R C-L-U-B-house!"
- The Unintelligible: Mel only speaks monster gibberish.
- Vague Age: They can hold club meetings without an adult directly watching them, and yet they take naps. Then again, these naps only last for about four seconds.
- You No Take Candle: Averted for Phoebe and Googel, who talk normally, and Mel, who speaks gibberish, but played straight for Narf, who uses primitive grammar (says "me" instead of "I", drops the word "is", etc).
- Joey Mazzarino (2005-2015)
A fluffy orange monster with a round, oversized jaw who rose to fame by hosting a variety of recurring segments; namely Word on the Street and Murray Has a Little Lamb. These are unique in that they're kept separate from the regular Sesame Street scenes by being set in the "real world" where Murray has largely unscripted scenes interacting with "normal" people, with his Spanish-speaking lamb Ovejita.
- Alliterative Name: His surname is implied to be "Monster".
- Amusing Injuries: Frequently. Usually in the form of The Pratfall.
- The Cameo: Murray very rarely appears in "street scenes." Joey Mazzarino has said that he prefers for Murray to be kept in the "real world" à la Uncle Traveling Matt.
- Demoted to Extra: Fell victim to this in Season 46. Due to the show's format and runtime change that came with it's move from PBS to HBO, his regular "Tune-in" segments were removed entirely (barring a few reused "Murray Has a Little Lamb" segments) and his only new appearances in that season were for a few celebrity musical numbers.
- Early-Bird Cameo: Murray made several appearances before he was first called by name on screen.
- Epic Fail: A lot of his first attempts at the focal activity in the segment results in this. Once, while trying a high-kick in a Dance School segment, he not only sends himself flying onto his back, as he is wont to do, but manages to kick himself in the face in the process.
- Excited Kids' Show Host: Murray plays Type 1 to the hilt, on Murray Has A Little Lamb, and Word on the Street.
- Keet: Highly energetic.
- Larynx Dissonance: With a jaw like his, you may not expect his voice to be as high or childish as it is.
- Living Crashpad: Ovejita regularly uses him as one just as a way of greeting him at the start of each segment.
- Mad Libs Catchphrase: Ever since wrapping up each episode became his job, this has been how the letter and number of the day have been reviewed.
- Non-Human Sidekick: Murray has Ovejita, a little Spanish-speaking lamb with a tiny hairbow, sticks out from the cast of strange monsters. Although it's debatable whether she can be called a "sidekick", as he usually follows her lead.
- Palette Swap: His design is an orange variant of a purple monster, named Filfil, from the Egyptian co-production. In fact, most of the crew just called him "Filfil" until someone came up with "Murray."
- Prison Episode: In the Little Kids, Big Challenge: Incarcerated episode, It reveals that his uncle was sent to jail because his father violated the law.
- Put on a Bus: Has proven to be his fate following Mazzarino's departure from the series in 2015. Matt Vogel confirmed in a May 2016 Facebook post that there are currently no plans to recast him because "it's such a Joey character".
- Tertiary Sexual Characteristics: Played with. He has quite a jaw on him, but his eyelids sport noticeable lashes.
- Performer: Brian Muehl
A brown monster who lives in a cave with Deena, for whom she serves as a caretaker. She likes peace and quiet, which is often difficult for her to achieve because of Deena's relentless energy.
- Put on a Bus: Both Deena and Pearl saw dramatically reduced roles starting in the twelfth season, and one of their last known appearances together was in the wedding sequence of The Muppets Take Manhattan. The Pearl puppet later became used for extras in various sketches, minus her orange tuft of hair.
- Team Mom: Often tries to calm down her roommate, especially when that character's overtly energetic tendencies come into play.
- Carmen Osbahr (1991-present)
A 5-year-old bilingual monster who plays guitar. She was originally patterned after a fruit bat, but lost the wings in Season 35. She stated in an interview that they just popped off when flying.
- Blue Is Heroic: While her fur is not as deep of a blue as Grover or Herry's, she's just as kind.
- Continuity Nod: Luis taught her how to play the guitar, and she has retained that skill very well.
- Early Installment Character-Design Difference: For the first thirteen years of the character, Rosita had a pair of wings, and we've seen her use them to fly. 2004 onward, the wings disappeared and there has never been an explanation as to why on the show. According to her puppeteer, the choice was made by the merchandising wing of Sesame Street.
- Gratuitous Spanish: She peppers her sentences with Spanish phrases to introduce basic Spanish vocabulary to the kids. She also has an occasional segment where she gives the "Spanish Word of the Day".
- Hair Decorations: A small yellow ribbon.
- The Smurfette Principle: Rosita has the distinction of being the first female monster in the Sesame Street cast, and was the only female monster until Zoe arrived in 1994.
- Mentors: Rosita takes Gina's son Marco under her wing, because he is Guatemalan.
- Military Brat: Like Elmo, Rosita has to deal with having a military father. Her father comes home injured and confined to a wheelchair, and she has a hard time adjusting to the consequent changes.
- Nice Girl: A friendly monster who shows her compassion by giving hugs.
- True Blue Femininity: A blue furred creature who acts "girly".
- Overly Long Spanish Name: She's almost never referred to by it, but her full name is Rosita, la Monstrua de las Cuevas (literally "Rosita, the Monster of the Caves").
- Quirky Ukulele: She's a guitarist, but knows her way around many different stringed instruments, and employs them for various peppy, upbeat songs.
Camille Bonorah (1988-1992)
A bright red haired yellow monster who loves learning experience and research on everything.
- Frankie Cordero (2017-present)
A blue-haired orange monster who is Abby Cadabby's stepbrother, introduced in season 47 to help introduce kids to blended families. He has a habit of "borrowing" his stepsister's wand without her permission.
A trio of singing monsters from the early 1990s. They sang songs such as "Brush Brush Boogie".
- No Celebrities Were Harmed: They are based on The Shangri-Las.
- Bob Payne (1979)Brian Muehl (1979-1984)Martin P. Robinson (1984-present)
A mildly neurotic, easily discouraged monster. Was best friends with Oscar; now best friends with Baby Bear. He also has an obsession with Triangles.
- Characterization Marches On: He was originally obsessed with television, but grew out of that over the years.
- Cloud Cuckoo Lander: Downplayed. While he seems on the same plane of reality as everyone else, he has a vivid imagination and a strange interest in triangles.
- Dagwood Sandwich: Makes a sandwich with all the ingredients he can think of in one episode.
- Does Not Like Spam: When he made the "everything sandwich", the lettuce was the only ingredient he disliked.
- The Eeyore: Telly is known for being somewhat pessimistic.
- Intrepid Reporter: In the "Monster on the Spot" segments.
- Lovable Coward: Is sweet and nervy.
- Mind-Control Eyes: In his early, TV-obsessed appearances, his eyes would turn into red spirals when he watched TV.
- Mood-Swinger: Will often go from being calm to scared at the drop of a hat.
- Mr. Imagination: A lot of his worries are due to his vivid imagination running away with him.
- Nervous Wreck: His neuroticism is probably his most prevalent trait.
- Non-Indicative Name: It's an artifact of his early "watched too much TV" phase.
- Puppy Love: While he doesn't have an official age, he's generally treated as a kid; and Marty Robinson confirms that Telly has a crush on Rosita.
- Sick Episode: In one episode, he gets "triangle-sneeze-itis" which makes him sneeze while near triangles.]
- Something-itis: Gets "triangle-sneeze-itis" in one episode.
- Something Person: Played Texas Telly In "The Golden Triangle of Destiny."
- Story Arc: He spends several episodes with a broken arm.
- With Friends Like These...: Was once sort-of-friends with Oscar, of all people. Three guesses how that usually went. Thankfully, he later found a much better friend in Baby Bear.
- You Watch Too Much X: A big aspect of his character at first. While more physical activity is being encouraged nowadays, his obsession does still occasionally show up.
- Peter Friedman and Richard Hunt (ca. 1978)Jerry Nelson and Richard Hunt (ca. 19801991)Jerry Nelson and David Rudman (19922000)Joey Mazzarino and David Rudman (20012015)Eric Jacobson and David Rudman (2016-present)
- Big Eater: Implied. Both heads share a body (and therefore, a stomach), but eat separate meals.
- Big Ol' Eyebrows: One of the Two-Headed Monster's heads has them. Verging on a Big Ol' Unibrow.
- Drama King: Sometimes, he/they overact/s, for example, when one head cries because the other has more milk.
- Exactly What It Says on the Tin. Usually appears in order to teach the merits of cooperation or sound out words phonetically.
- Hulk Speak: More so than Cookie Monster.
- And that's when they're actually saying coherent words.
- Multiple Head Case: Exactly What It Says on the Tin in their (his?) name, right?
- No Indoor Voice: The Two-Headed Monster's heads are very loud and rambunctious. Often, once they get going, the segment's voiceover has to literally shout to be heard over them.
- No Name Given: Well, sort of. Was named "Horn and Hardart"note in his first appearance in the late '70s; this name was never used again.
- Pronoun Trouble: Occasionally, it's played as a gag as to whether the Two-Headed Monster should be referred to as a "him" or "them". If the Two-Headed Monster does have a preference, it's never come up.
- Two Beings, One Body: No one is certain whether or not it's one being with two heads, or this trope; this was lampshaded in A Muppet Family Christmas by Bert and Ernie.
- The Unintelligible: They are (or he is; it's hard to tell whether it's two people or one person) either speaking in Hulk Speak or gibberish.
- Fran Brill (1993-2014)Jennifer Barnhart (2015-present)
A monster who was added in the 1990s in order to add balance to a predominantly male cast. She is good friends with Elmo and Big Bird. They gave Zoe a tutu in 2002, so people wouldn't be confused on whether she's a boy or a girl, but it was removed in 2017.
- Characterization Marches On: A few years ago, she was permanently dressed in a pink tutu.
- Consulting Mister Puppet: Zoe's pet rock, Rocco, who she talks to in spite of Elmo's sarcastic rebukes.
- The Cover Changes the Gender: She did a cover of the Sesame Street song "Fur."
- Distaff Counterpart: Pretty much a female Elmo, plus a loyal rock sidekick.
- Fully Dressed Cartoon Animal: Zigzagged. Sometimes she wears a full ballet outfit, sometimes not.
- Girliness Upgrade: Starting in Season 33, she wears a pink ballerina tutu.
- Hair Decorations: A very subtle set of pink and purple barrettes.
- Pink Means Feminine: Subverted, her ballerina tutu is pink and she does like ballet but she is a tomboy.
- Signature Laugh: A high-pitched, kind of shrill-sounding laugh that, to some people, sounds like a squeaky wagon wheel.
- The Smurfette Principle: She was the only female monster on the show aside from Rosita for a decade.
- Spelling Song: In one of her first inserts, this is how we are introduced to her.
- Thememobile: She rides in a vehicle called "The Zoe Mobile."
- Tertiary Sexual Characteristics: Aside from having prominent eyelashes and a smaller pink nose, she usually sports a necklace and bracelets along with her hair decs.
- Tomboy: A mild example; she's a Genki Girl and She Cleans Up Nicely.
- Tomboy and Girly Girl: Tomboy to Abby's Girly Girl
- Tomboy with a Girly Streak: She has picked up on ballet and usually wears a pink ballerina tutu starting in Season 33 and she also wears a necklace, bracelets, and hair barrettes.