When Godzilla finds a gap in his old lair, opened by the detonation of the bomb, he is surrounded by a gigantic swarm of Hollow Earth fish that seem to share a hive mind, suddenly Genitor emerges from the gap and bites Godzilla on the neck, making him bleed. Godzilla quickly retaliates by brutally snapping the creature in half, breaking its entire skeleton and killing it instantly, while also destroying the hive mind.
Genitor was able to control smaller members of its species with a hive mind, forming a massive swarm.
Genitor was fast enough to ambush Godzilla before he could sense its presence.
Strength and combat
Genitor's bite was so powerful that it could penetrate Godzilla's tough skin.
Genitor's body lacked armor, making it extremely fragile, and was easily killed by Godzilla.