Banggeulping

She is a lively and tomboyish teenieping with a big smile.
She is a lively troublemaker and tomboy who always shows off her eccentric behavior. She will try anything that seems fun, but she is very strong and can only be stopped by multiple teeniepings holding her down. Sometimes her swinging head hits someone, but she doesn't notice. She often laughs without reading the mood, but sometimes her laughter can empower other people.

(Source: Official website)