Kakizaki debuted in Episode 1849, where she reassures Mr. Snuffleupagus that he is in fact real. Several of her street scene appearances paired her with Big Bird and/or Snuffy. One of her larger roles came in Episode 2013, where she and Big Bird spend the day pretending with a paper towel tube. Outside of street storylines, Mika was one of the kids for B. B. King's performance of "Count to Ten" (First: Episode 1961) and appeared in the special Don't Eat the Pictures.
Her father, actor/fashion model Seiji Kakizaki, appeared as an extra, playing a Library patron in Episode 1869 and a voter in Episode 1957. He later appeared as a Japanese executive in Old Dogs (using Jim Henson Company-recycled puppet suits).