The monsters, upon suffering high damage or receiving critical blows, exploded in a burst of blue-colored blood. This peculiar reaction triggered a rain of blood across the surroundings.
This recurrent pattern sparked suspicion; it appeared that these monsters were designed or modified in such a way that their blood carried a specific contagion. The blue-colored blood, when dispersed upon their demise, seemed to pose a potential danger. It suggested that the creatures were possibly engineered to infect or contaminate those who came into contact with the blood.