Martha appears as the ghost of a human woman, with a translucent cyan-green form that glows softly in the dark. Only the top half of her whole appearance has been shown so far in the show, but she has hair that goes down to slightly above her shoulders, a wide-brimmed hat, and a short-sleeved knee-length dress with a ribbon at the neck and waist. Her eyes are solid white with black eyebrows. She has no visible mouth but is fully capable of speaking clearly.
