Polly

Polly is a girl around Kester's age. She is first mentioned in The Last Wild, and possesses a gun for self-defence. She used to have a cat called Sidney.

Personality
Polly is a fierce and determined girl. She was alone before she met Kester. Upon their meeting, she was highly suspicious of Kester, as she had "caught" him trying to converse with Sidney, her cat. The fact that Kester also could not speak made her even more mistrustful. At first, she thought that he had wanted to steal Sidney, the cat being the last ones that remained alive, and so called him "Kidnapper". Slowly, even after losing Sidney, Polly begins to befriend Kester.

She continues to call him Kidnapper throughout the book, only sometimes actually using Kester's real name.

Meeting Kester
When Kester believed that he had gotten the red-eye virus, he ran way from his animal friends. He then enters Wind's Edge. With General in his pocket, Kester explores the area, and when he hears a crying sound, he follows it curiously. He ends up in a room, and realizes that the crying belongs to a skinny cat - Sidney. Upon seeing her red eyes, Kester knows that she is infected, yet mystified by why she wasn't dead yet. Just as he is about to take a picture of Sidney, Polly appears, pointing a gun at him and telling him "(to keep his) hands off (her) cat", as well as to "turn around".

Polly believes that Kester is trying to steal Sidney, and so is extremely suspicious about him. When she realizes that Kester is mute, she hands him a Scrabble set, asking him to spell out words to answer her questions. The two gain each other's trust.

After that, Polly seems to like Kester's Wild, and is affectionate with them.

History
Polly lived in Wind's Edge with her family before the red-eye started. According to what she tells Kester, "they" (presumably Factorium) tried to make her family leave the house when Wind's Edge was made a Quarantine Zone, but they resisted, and Polly placed Sidney in a suitcase before running up to the attic to hide when they came. Her parents had left the house, and Polly seems to be waiting for them, due to the fact that when she and Kester hear a car outside, she immediately springs out and shouts that her parents might be home.

Polly wants to find her parents, as she asked Kester at the end of The Last Wild.

Knowledge of Plants
Polly gained her vast knowledge of wild plants from her parents. When Factorium destroyed the plants and crops, Polly's father said that "if they were to stay, they had to learn everything there was about the plants". Since Polly's parents were historians of the way humans used to live, they had an old library, which they studied books from.

Another reason why the family did so was because that Factorium never gave them a share of formul-A, as it was only for people in the cities, while they were still in the Quarantine Zone. Without their source of food, they then started to learn, which plants were safe to eat, and which ones were not.

Polly's knowledge of plants helped Kester and the animals in many ways.