Abominations were not originally intended to serve as organic war engines. They were an advanced and cruel form of punishment, devised on a whim by the Sovereign. Ensconced deep within an Abomination lies the body of an Exile who has betrayed his trust or breached the most sacrosanct of Spire laws. Despite significant effort, even the Sovereign’s most ardent opponents have not been able to come up with a more cruel punishment and have adopted this cruel torture for their worst enemies.
Invasive cerebral procedures impairs the cognitive function of the condemned, as chemical and hormonal treatments are applied to make them lose control of their Life-Binding gifts and forcibly bond them to a lower organism. Multiple organisms were proposed and tried but the humble ant was ultimately preferred. While more gruesome examples could be made, it was found that those Abominations bonded to other species were too intractable or self-destructive. The ant’s instinctive hierarchical physiology somehow makes it more susceptible to Pheromonic command, forcing the body to respond to orders while allowing compromised psyche trapped within the hellish amalgam only enough control to wail its anguish even while enacting the will of its tormentors.