Unfortunately, "the purple monster" is not really specific enough to definitively identify a particular Muppet. My best guess would be Telly. Check the related links section to see if that's who you meant; if not, you could browse the Muppet Wiki to try to find the one you're talking about.
cookie monster
The Cookie Monster stays in Sesame Street. :)
sesame street
Sesame Street C is for Cookie Monster - 2010 was released on: USA: 1 January 2010
Abby Cadabby
They, have changed cookie monster to veggie monster which is a disgrace to sesame street!
cookie monster
No.
The Cookie Monster stays in Sesame Street. :)
sesame street
Sesame Street C is for Cookie Monster - 2010 was released on: USA: 1 January 2010
The Sesame Street character Cookie Monster was created by Jim Henson who is also the creator of the Muppets. He created Cookie Monster in 1966 and it was a huge success.
your mother!!
it is a video.
False
in sesame street
Abby Cadabby