In an alternate timeline, the Children of Soong were a race of Soong-type androids which dominated former Federation space circa the 44th century. The race was begun when Data, affected by the cumulative deaths of friends over the centuries of his life, retreated to Doctor Noonien Soong's former home on Omicron Theta, and created companions as immortal as himself. (TNG short story: "I Am Become Death")