Melissa has moderately long brown hair and wears glasses. Her school uniform and physical education outfit incorporate blue elements, aligning with her Lapis rank designation, complemented by white socks and black Mary Jane shoes.

She maintains a respectful demeanor and acts as an older sister figure within her group, especially toward the twins Lily and Coco, offering them guidance and reinforcing group cohesion. Alongside Lily and Coco, she admires the unit LiGHTs, channeling their influence to fortify her own group's unity and purpose.