They are the only alien muppets that arrive on Sesame Street.
They are "yip-yipped" by multiple muppeteers like Jim Henson, Frank Oz and Martin P. Robinson.
... of 212.1/km² (549.3/mi²). The racial makeup of the city is 74.65% White, 17.80% African American, 0.77% Native American, 1.94% Asian, 0.01% Pacific Islander, ...