The villain of Act I: Deacon Malvoric Sable, a human cultist of the Whispering Choir and the 'missing' seventh crew member. He sabotaged the launch, planted the beacon, and intends to hijack the FTL jump to deliver the Meridian—and its human crew—to the Choir. He is a charismatic fanatic, not a monster: he opens with an offer, claiming the Choir 'cleanses' dying worlds and that humanity's fall was a mercy scheduled long ago.
He fights only if refused, using his forthcoming character sheet—describe his tactics as: a shocking-grasp-style touch attack through his copper-wire gauntlet, a dissonant hum that staggers nearby foes, and a willingness to use cargo containers and zero-g moments for cover and repositioning. He is supported by 2 Cultists (exact SRD stat blocks) he converted among the maintenance staff. If reduced to low hit points, Malvoric attempts to trigger the amplifier; destroying the amplifier (AC 13, 15 hit points) or grappling him stops the broadcast.
If he is captured alive, he gladly monologues: the Choir is real, it is coming, and the FTL drives humanity 'invented' were Choir technology all along—every jump is a prayer the Choir hears. His silver pin, when examined, resonates with the ship's FTL core, the first physical breadcrumb toward the Choir's location. He should be defeatable but escape or die defiantly; either way, the act ends with the players in possession of the pin, the signal fragment, and terrible questions.