Height: 167 cm

Ririka wears a long black dress with jewelry, ear piercings, she has sunken eyes and lighter colored hair. She usually wears a mask but when she doesn't have it on you'll be able to see 2 big scars across her mouth.

She is extremely serious and business-like, spending little time on hobbies or pastimes.

Umezawa awakened to her powers as a choujin in high school and from an early age was heavily involved in criminal activities. She was the mastermind in the Minami Bank Robbery, which has been nicknamed as the "Umezawa Hundred Million Heist" due to her role in it.