Unlike her friends, Yaya's weakness is not related to her powers because her weakness is she doesn't know how to make delicious biscuits, because her biscuits are hard and when eaten, it can make someone faint.


In Episode 3, BoBoiBoy and Gopal was told by Ying to run away in the shop because of Yaya's biscuits, but BoBoiBoy doesn't believe her. In the end, BoBoiBoy believed that Yaya's biscuits are horrable after tasting some.