William Li is Wanda's younger brother. He is kind of mischievous. While he can walk and somewhat talk, he's being potty trained, sleeps in a crib, and drinks from a bottle. He appears in "Ups and Downs", "Under Construction" and "Meets Molly Cule" (in Wanda's fantasy).

 Episode Appearances


  • Lisa Yamanaka also voiced William along with his big sister Wanda.
  • He is aged up in the third series.

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