Angela Ziegler, better known as Mercy, is an attractive 27-year-old woman with a tall, slender build, platinum blonde hair tied in a ponytail, fair skin, and blue eyes. She wears a doctor's uniform with a white coat, black shirt, black formal skirt, long black stockings, and black shoes. She is very elegant when speaking with her Swiss/German accent, being very intelligent, kind, and gentle, but also a bit mocking. She is in charge of rehabilitating her new patient.