Poppy Mayfleet

Poppy Mayfleet is Lina Mayfleet’s younger sister.

Personality
Poppy is described to be a big ball of energy, always happy and enthusiastic.

Book 1: City of Ember
In book 1, Poppy is introduced as Lina Mayfleet's younger sister. Lina often carries Poppy around. When Lina carries Poppy to Looper's store to buy some colored pencils, Poppy goes out of the store, unknowingly to Lina. After Lina buys two colored pencils -a blue and green one-, she notices that Poppy is missing and goes frantic. While Lina is trying to find Poppy, the City has a blackout. When the blackout finishes, Lina goes to the Believers, and Doon hands her a squirming Poppy.

Book 2: The People of Sparks
In this book, Poppy becomes sick. Torren, who is Doctor Hester's nephew, worries Lina by joking that Poppy has the plague. Poppy is described to be pale, and not the ball of energy that she usually was. She became a little better and a little worse, and Lina and Mrs. Murdo are by her for much of the day. Poppy, to Lina's relief, eventually gets better.