Lady Sally Scott is Metro Man's adoptive mother and a High-Class citizen of Metro City. She is married to Lord Scott.
Lady Sally Scott and her husband were sitting in their living room when a golden child sized rocket containing an alien baby entered their mansion and landed right under their Christmas tree. Lady Sally Scott found the pod as she was about to open her presents and, thinking the baby was a gift from her husband for her, adopted him while Lord Robert Scott didn't pay much attention to her.
Her comment on the baby being a "thoughtful" present implies that Lady Sally Scott loves children and had been wanting one of her own for awhile.
- Lord and Lady Scott have a present under their Christmas tree labeled "To: Bobby, From: Sally". Implying that Lady Scott's name is Sally.