Ihwa has long silver-white hair, intense blood-red eyes, a muscular yet slim build, and typically wears an open red jacket over a black shirt, black pants, and either white tennis shoes or black heels. When disguised as "Kasha," her hair turns jet black, and her outfits conform more to Hero standards. Ihwa is highly calculating, cautious, and willing to kill to protect herself or advance her goals. She is intelligent, resourceful, and a master tactician, often relying on strategy in fights.