Edith is the classic middle child...rebellious, mischievous and moody.  She is fond of disobeying and arguing with her older sister Margo, and teasing her younger sister Agnes.  Like Margo and Agnes, she has spent most of her life in Miss Hattie's depressing orphanage.

Edith is also something of a tomboy, preferring to stomp her way through rain puddles and imagine herself more as a fearsome ninja than a graceful princess or ballerina (even though she and her sisters regularly attend dance classes and recitals).  And yet, when the time comes to really train as a little ninja, after being adopted by Gru, she proves quite adept at it.  Edith loves getting into things, regardless of the probable consequences...and then blaming others when things go wrong.  She also loves wearing her favorite knit chulo cap (with its long tassels), and a matching sweater.