Sumi was a girl of small frame and light skin tone. She had dark colored hair that was fastened in a low bun with her bangs clipped back on the crown of her head. She also had a very small face with large, blue round eyes. Sumi bore a great resemblance to her mother.Sumi was a warm and caring child, much like the rest of her siblings. During one of her father's violent outbursts, she blocked her youngest sibling's view in order to prevent him from seeing it.