Raiden Ei has pale skin, purple eyes with light blue pupils, and long, dark violet hair that becomes lighter at the ends, which glow when she uses her Elemental Skill or her Elemental Burst. She also has a beauty mark below her right eye. She is depicted as a tachi-wielding woman with long violet-colored hair that was worn down. She wore a kimono which is similar to the one she wears in the present day.