Meet 3-year-old fairy-in-training Abby Cadabby, the first new character in 13 years to be introduced on "Sesame Street," where there have never been too many girl Muppets.

There's a new kid on the block."Sesame Street" recently introduced TJ, its first Filipino muppet, on a segment with Kal Penn. TJ and his friend Ji-Young, a Korean American muppet who debuted in ...