NEXUS Incorporated is an incarnation of the A.A.H.W. that appears in Kelzad's fan Madness Combat series REALM.
Unlike their canon counterpart, NEXUS appears to be affiliated with Project Nexus.
Prior to Hank's attack, the organization was fairly small and ruled by the Sheriff. After Hank killed the Sheriff, the organization was renamed to the "A.A.H.W."
The Auditor at some point took charge of the program and started a new project called "Project Nexus", and gave an intelligent Grunt named Callisto co-ownership of the project.
The Nexus group later broke off from the agency and went on a mission to save the entity known as the High from the Employers.