Libri was an engineer on Space Station Nerva and one of the first to wake from suspended animation. When he was revived, he sensed Noah had been taken over by the Wirrn. He was later sent to follow Noah and try to stop him. Libri confronted Noah in the control room, but couldn't bring himself to shoot his commanding officer. Noah took Libri's weapon from him and shot him dead, calling Libri a "fool". (TV: The Ark in Space)