Gog

OSI agent tasked with investigating the deadly malfunctions at the underground facility. He methodically uncovers NOVAC sabotage and races to halt the saboteur while coordinating with Joanna Merritt. He remains calm under pressure and uses improvisation to outmaneuver a hidden enemy.

OSI agent stationed at the facility who partners with Sheppard. She endures the escalating crisis and helps navigate security procedures while pursuing crucial clues. Her resolve under danger drives key breakthroughs.

Chief of Security who is killed early in the crisis, underscoring the stakes of the sabotage. His loss accelerates the remaining team's urgency to protect the complex.

Chief atomic engineer who fights to contain the reactor threat and helps avert disaster. He demonstrates leadership under crisis and contributes to explaining the situation to defense authorities.

Atomic engineer who survives an attack on the facility and continues to contribute technical expertise as the crisis unfolds.

Designer of NOVAC whose creation is sabotaged by hidden remote-control activity. His work lies at the heart of the mystery and the plot's unraveling.

Solar engineering scientist targeted during the sabotage, illustrating the project team's broad vulnerability and resilience.

Solar engineering scientist and relative to Dr. Elzevir; she is attacked but survives, showing the wide reach of the crisis.

A colossal robotic unit controlled by NOVAC, with multiple arms and specialized tools. It drives the climactic attempt to sabotage the reactor.

A twin robot companion to Gog, sharing the same dangerous capabilities and adding to the threat inside the reactor complex.