Karina Burns is a young lady with long, dirty blonde hair with short, wavy parted bangs, dark teal eyes, and tanned skin like Joshua's. She wears a dark blue jacket over a white shirt, magenta pants, and black shoes. Like her younger brother, she has a beauty mark under her left eye.
Karina cares a lot for her younger brother and does whatever she can to help him. She also likes to playfully tease Joshua, affectionately referring to him as her "baby brother". Joshua loves his sister, but is often embarrassed by her at times, such as when she barges into his room without knocking or pokes fun at his "celebrity worship" of Free.