(Frank Oz, the original voice of Cookie Monster, has claimed the nickname was solidified after a sketch called “The Mr. and Mrs. Game,” as he once told NPR. In it, a blue Muppet wins a game ...

He then debuted on "Sesame Street" as Cookie Monster, a much bigger Muppet with blue fur, no teeth, and a floppy, expressive body. From then on his design has mostly stayed the same, but his mouth ...

Ameera, 8, is a neon-green, pony-tailed muppet monster designed as part of Sesame Workshop's initiative to provide early childhood education to children affected by global crises around the world.