Jung Jong-ee

Jong-ee is an autistic little girl who does not speak. She usually holds onto a large stuffed teddy-bear, which she carries around constantly, but after it is taken away by Kang in order to toughen her up, She begins clinging to Naughty when he comes into the school. She has Several small adventures with him while procuring nails for him to eat, one of which almost ends in her getting attacked by dogs, thinking she was a fox due to clinging to Naughty, who carries Yobi's scent from being around her so long. Yobi however ends up rescuing her, letting her in on the secret of being a fox, under the condition she not tell anyone. Later, after Naughty runs away she gets lost in the woods trying to find him, but is rescued by a bear, who brings her back to the others. It was then that Jong-ee finally speaks, excited to see her parents.

(Source: Alchetron)