Lal

Lal was a Soong-type android constructed by Data in 2366 in an effort to both continue his creator, Noonien Soong's, work and to experience the act of procreation. Lal was activated genderless and was allowed to choose it's own identity, settling on that of a Human female.

Lal soon began to exceed her specifications, developing emotions and becoming more Human than her father ever achieved. Unfortunately her experiences were short lived as she suffered a fatal cascade failure in her neural net. (TNG episode: "The Offspring")

Lal remained in Data's thoughts for many years to come. During his experimentation with painting, he painted a portrait of Lal, which he later showed to his mother Juliana Tainer when she visited the USS Enterprise (NCC-1701-D) in 2370. In 2376 Lal was one of several prominent people and events Data recalled when he suffered flashbacks due to exposure to the Orb of Memory. (TNG episode: "Inheritance"; DS9 novel: Avatar)