The show included human and puppet characters such as Big Bird, Snuffleupagus, Oscar the Grouch, Bert and Ernie, Elmo, Count von Count, The Cookie Monster, Grover and the regular cast was also frequently joined by Kermit the Frog. Each and every section of Sesame Street has its own valuable educational information, which includes number of the day, letter of the day and Elmo’s world.

Big Bird is an 8-foot tall golden condor and lives just off 123 Sesame Street in a giant nest. Big Bird can roller skate, dance, sing and even write poetry and was multi talented.　 Big Bird as being six years old and has a teddy bear named Radar. Big Bird encourages children by telling them that it’s okay if they do not know everything, because he himself does not know everything, and also, to ask a grown-up if they have a question. Big Bird starred in his own movie in Sesame Street presents "Follow that Bird" in 1985 and "Big Bird in Japan" in 1991.　
　
Snuffleupagus, olso called "Snuffy", was originally thought to be an imaginary friend to Big Bird and that was because Snuffy would leave just before anyone else would arrive. He is a big furry brown Muppet who looks like an elephant with lots of hair or a saber-tooth tiger without the tusks. Everyone finally discovered that Snuffy was real in November of 1985 and he continues to star in Sesame Street today.　
　
Oscar the Grouch is a green Muppet that lives in a trash can on Sesame Street and he is usually very grouchy. His favorite thing in the world is trash. Oscar has never been seen outside of his trash can on Sesame Street. Oscar has an orange pet worm named Slimy as well as a pet elephant named Fluffy.　　　

Bert & Ernie are two Muppets who live on in the basement of 123 Sesame Street and they are roommates. Bert is the crankier character of the pair and was originally performed by Frank Oz, the voice of Miss Piggy and Yoda from the Star Wars movie franchise. Bert always gets irritated by Ernie's crazy ideas and usually loses his temper with Ernie.　Ernie is the comic relief of the pair and is widely known for his "Rubber Duckie" song and his fondness of baths. Ernie is also notable for coming up with some crazy ideas while Bert tries to talk him out of it.　
　
Elmo is a red Muppet that hosts in the last segment on each Sesame Street episode called "Elmo's world."　Elmo’s character is supposedly three years old and constantly refers to himself in the third person.　Elmo has had several different dolls over the years and created in his likeness, including "Tickle-Me-Elmo," which became a pop-culture sensation in 1996.　
　　
Count von Count is a purple vampire Muppet that lives in a spooky castle on Sesame Street and is most notable for his voracious love of counting, he will count anything and everything, no matter the size or number.　The Count first appeared on Sesame Street in 1972 and has made appearances in several of the Sesame Street movies. Count von Count has a full segment on Sesame Street where he teaches viewers the number of the day.　
　
The Cookie Monster is a blue Muppet who lives on Sesame Street and he has an unstoppable appetite for cookies and eats them every chance he gets.　Cookie Monster was first performed by Frank Oz and has hosted several segments on Sesame Street, including "Monsterpiece Theater". In 2000 he took over the letter of the day segment. Cookie Monster has even appeared on an episode of Martha Stewart Living.

The show has been aired in over 120 countries and has been awarded more than 100 Emmy awards.