A common Fairy Tale situation. Whenever multiple siblings are portrayed, the youngest is the hero; the older ones are either evil or just boring. In a standard story template that often goes along with this, each child in turn receives instructions from a (usually magical) source on how to make their fortune; the older two ignore the advice and suffer the consequences, while the youngest one follows it and gets a happy ending. This child is often more foolish or weaker than his siblings -- The Runt At the End, in fact. Even if he isn't, the older children are prone to believe that he is.