Master
The protagonist of "The Awakening" by Arthur C. Clarke, who had suffered a heart failure and was given less than a year to live. He chose to be artificially frozen and kept at a secret location for hundred years.
Marvin
The child in “If I Forget Thee, Oh Earth” who resided in a lunar colony and was told by his father what happened to the earth and how they need to restore it.
Marvin’s Father
The Father of Marvin in “If I Forget Thee, Oh Earth” who explains to his son, Marvin that earth was destroyed in a nuclear war and their colony needs to restore it.
