Grandma Marsh

{{South Park characters
 * image = Grandma_Marsh.jpg
 * name = Grandma Marsh
 * gender = Female
 * hair = Gray
 * age = ?
 * religion = Roman Catholic
 * voice = Mona Marshall or April Stewart
 * appearance = You have 0 Friends

Grandma Marsh is Randy's mother and Stan's grandmother. She is revealed that she is sick at the hospital, probably the reason we have never seen her in other episodes.