Children of the Lens

Blurb

The Children of the Lens are characters in the fictional Lensman universe created by E. E. "Doc" Smith.
One male and two pairs of twin females, they are the children of Kimball Kinnison and Clarissa Kinnison, both of whom are second-stage lensmen. Their children are third-stage lensmen, and are the only entities with powerful enough minds to defeat the invading inhabitants of the planet Eddore.
The Children of the Lens were the culmination of an eons-long breeding program set up by the inhabitants of Arisia, a race of entities with third-stage intellects, as are the Eddorians. The Arisians set up equivalent breeding programs on three other worlds, Rigel IV, Velantia III, and Palain VII, but decided that the human stock was the most promising, so the other races' equivalents of the Kinnisons never met.
The Children of the Lens were developed to replace the Arisians as guardians of the races of Civilization, after the close of the war against Eddore. They were developed to be the progenitors of the new race that would replace the Arisians, who departed the Cosmos after the close of the struggle against the Eddorians.