Doctor Maggie Erickson was a Human female on Earth. A psychologist, in 1974 she was employed by the Chrysalis Project as director of the base's daycare facility for Augment children. She was engaged to be married to Doctor Everett Walsh. (TOS novel: The Rise and Fall of Khan Noonien Singh, Volume 1) It is implied that Maggie Erickson is the same person as Maggie Walsh, a recurring character in the fourth season of Buffy the Vampire Slayer.