Zaibatsus are mostly Japanese, powerful multinational corporations that control entire economies.
According to Fox, zaibatsus are the dominant form of intelligence on the planet, a structure independent of the individual lives that comprise it. Their blood is information. Security teams protected their chief scientists and officials.
There was a secret war between the zaibatsus, with internal rivalries, corporate espionage, crossovers and defections. Corporate contacts were like specialized cells protecting the parent organism