Captain Cain commands military operations from Edwards Air Force Base, focusing on the pursuit of the enigmatic Space Mind orb. His core mission is reclaiming the orb after civilians Noera and Marcia acquire it. He directs extensive search operations, deploying ground teams and helicopter units while deliberately concealing critical mission specifics from subordinates to preserve secrecy.

Confronting the protagonists, Cain first attempts negotiation, offering $10,000 for the orb's return. When this fails, he resorts to physical force to seize the object directly. His pursuit escalates dramatically as the targets approach Death Valley, culminating in Cain personally leading helicopter gunships to attack their vehicle. During this assault, he ignores explicit safety warnings, ordering pilots into perilously narrow canyon terrain. This reckless command results in a catastrophic helicopter crash.

Cain survives the crash with improbable resilience, emerging from the flaming wreckage physically intact. He immediately resumes his pursuit on foot. His characterization shifts progressively from calculated military professionalism toward near-fanatical obsession with securing the Space Mind, disregarding all potential collateral damage or casualties. No official background details exist regarding his origins, personal history, or motivations beyond obtaining the orb. The narrative concludes without resolution to his pursuit following the orb's neutralization; he makes no further appearances in additional media beyond this single installment.