A sub-type of Psychopath. Used to describe someone who is the worst actor on the planet, who lies more that the more that a serial killer, and has the unique talent of shitting on command.
When a nation's leadership becomes so psycopathic that no political ethos functions and the whole government becomes a reflection of the people's personality disorders.
Following Emperor Caligula's plan to make his favorite horse Incitatus a consul, many could argue that Rime had become a psycopathocracy.