A drawing of a woman about 15 cm (6 in) in height and 3.8 cm (1.5 in) wide, in summer dress with long hair pulled back into a ponytail. She is completely sentient And aware of her limitations and cannot leave the sheet of paper she is on. Although her voice is inaudible, she has learned to communicate with SCP Foundation personnel through ASL or writing. Foundation personnel communicate with Cassy by writing on the paper