The Big Bad Wolf is a famous fairy tale character, professional windbag, and connoisseur of pork and baskets of goodies.
He continually engages in the good-natured pursuit of the Three Little Pigs and Little Red Riding Hood.
He has been seen on Sesame Street in many different incarnations over the years, most commonly performed by Jerry Nelson.
The character debuted in "Sesame Street News Flash" segments which reenacted or spoofed his stories, but later began making appearances on the street itself.
The earliest version of the Big Bad Wolf appeared in 1971, as a blue, shaggy wolf with an angry expression, a variation of the early Herry Monster puppet.
One "News Flash" segment about the Three Pigs' feelings substituted a green Big Bad Wolf.
By 1988, the character had been redesigned, and a purple puppet was used most often (and would also be used for Jackman Wolf).
Other versions of the character with different fur colors have also popped up from time to time.
However, all the puppets have had a moving eyebrow mechanism, save for the green wolf.
On occasion, the purple wolf puppet would be used for different wolves (such as the Big Mad Wolf in the song "Bad Wolf," or a Big Good Wolf in one segment when the Three Little Pigs were asked to identify whom was the Big Bad Wolf (it turned out to be the smaller green wolf, wearing a fake beard as a cheesy disguise.) The Big Bad Wolf has occasionally displayed diverse talents or interests outside of blowing down houses and chasing pigs.
In a 1982 News Flash with Cookie Monster as Little Red Riding Hood, he appeared as Dr. On another occasion, he invaded Ernie and Bert's apartment, where Bert assumed he was merely Ernie in another disguise.
(When the skit was adapted into book form as The Many Faces of Ernie, the Big Bad Wolf was replaced by Frazzle.) The wolf was also a member of Guy Smiley's studio audience in a skit where Smiley takes his entire audience out to lunch.