Sesame Street Characters

By order of debut:

1969 (Season 1)
* Bert and Ernie
* Big Bird - debuted in season premiere
* Fat Blue
* Fuzzy-Face, Grover's predecessor
* Kermit the Frog
* Lefty the Salesman
* Little Bird
* Lulu (Not to be confused with the Lulu from Hooper's Store and The Monster Daycare, this Lulu is Mr. Otis's Girlfriend, From Season 1.)
* Mr. Otis
* Oscar the Grouch, orange fur - debuted in season premiere
* Sam Hastings from Grove

1970 (Season 2)
* Grover
* Guy Smiley
* Harvey Kneeslapper
* Herbert Birdsfoot
* Herry Monster
* Oscar the Grouch, green fur - debuted in season premiere
* Professor Hastings
* Roosevelt Franklin
* Sherlock Hemlock

1971
* Aloysius Snuffleupagus - debuted in season premiere
* Frazzle
* Gladys the Cow
* Granny Fanny Nesselrode
* Simon the Soundman
* Twiddlebugs1972
* Count von Count
* Sam the Robot - debuted in season premiere
* Yip-Yips

1973
* Biff and Sully
* Don Music

1974
* Rodeo Rosie

1978
* The Two-Headed Monster

1979
* Elmo (introduced as minor character)
* Telly Monster
* Honkers

1982
* Dingers

1983
* Deena Monster
* Grungetta Grunge
* Pearl Monster

1985
* Hoots the Owl

1986
* Placido Flamingo

1990
* Baby Bear
* Rosita

1992
* Monty
* Zoe

2000 (Season 31)
* Lulu

2002 (Season 33)
* Googel (Monster's Clubhouse)
* Mel (Monster's Clubhouse)
* Narf (Monster's Clubhouse)
* Phoebe (Monster's Clubhouse)

2003 (Season 34)
* Curly Bear
* Barbara the Chicken
* Leonard the Wolf

2006 (Season 37) * Abby Cadabby