Lillian Gray, also called Dr. Gray, is the mother of Clancy Gray and wife to President Gray . Alongside being the First Lady of the United States, she was also a scientist, and close friends with John Alban: the previous leader of the Children's League .
In Never Fade , Ruby and Cole discover that Dr. Gray was researching a cure for IAAN , and that she may have found it. Ruby manages to rescue a few pages of it from the Los Angeles bombing. During In the Afterlight, Chubs and Vida find and bring her to the Ranch where Ruby discovers that Clancy destroyed her speaking functions. She heals her, though.
Throughout the book, she infrequently helps what is left of the Leauge and it is revealed that her main goal is to perform the healing procedure on her son, which she eventually does.