Scott Shelly one of the female protagonists in the webtoon. She begins a one-sided relationship with Jay at the start of the series but as the story progress they have a mutual crush on each other and as of chapter 378 they are in a relationship. Shelly is the only female member of the Humming Bird Crew.
Because she stayed at England before coming to Korea her personality is perceived as very headstrong. She does not like it when people talk badly about her friends, especially Jay. Shelly also has a lot of stamina and strength, she can keep up with the group's pace when racing and can actually send people flying with her punch (Although that may be for comedic reasons) but never got into the street fights with the guys of the crew. When she was hit on in her first appearance on the series she refused with a lot of sass.
Mia described her as someone who can confidently express her thoughts and feelings. Although her words are harsh, it is because she never sugar coated her words with her friends. And with Jay, Shelly is very clingy and flirtatious.
She has very foreign features: pale skin, her eyes actually look more mint green in color than blue, blond wavy layered hair. . It is known later in the series that she has a tattoo in the side of her arm near the wrist that reads out "temet nosce" or "Know Thyself". At school she wears her uniform usually without the red vest and both wears the skirt and pants. She is often seen wearing high-end brand clothing, but also occasionally wearing street wear and tomboyish clothes. When riding her bike, she usually wears a jacket and helmet with the same color as her eyes or the Hummingbird crew's hood. She is tall, with long thin legs, a small waist and a bigger bust.
Not much is known about Shelly, but it is established that she is from England and she requested to transfer to Sunny High School because of Jay. It was told in an early episode (Ep. 27) that she will be in Korea for one semester. Shelly is the granddaughter of Sunny High School's principal, Nick.
When Shelly was a kid, she didn't want to get married and promised Nick that she will just live with him forever, which caused Nick to think that Shelly is not interested to guys until she got interested in Jay. That also caused the over protectiveness of her grandfa.