The Gospog Master is not so much a person as a title, amd mot so much a scientist as an experiment. Originally the Gospog Master was only seen supporting Nile activities that relied on gospogs, and even then not near the front lines where the creatures were used most often. The Weird Sciences devices were said to be merely in development, and only capable of making the gospog more responsive to instructions.
But with the Gaunt Man's overt actions against the other realms during the so-called "Brides" kidnapping scheme, Doctor Mobius was free to unveil the true power of the Gospog Master device. It cpuld not only calm Nile gospog, but fully control their actions to produce directed and concerted efforts, but it could do the same with gospogs of every reality! Pharoah Mobius was able to harvest the Gaumt Man's own army and use it against him! (Just as he was sure the Gaunt Man had planned to do all along with his own Occult powers.) Since then no realm with active gospog has been safe fro Nile incursion.
Though one of the more sucessful of Doctor Mobius' plots, the Gospog Master program remains oddly unfocused, even by Nile standards. Potential Masters receive little or no training, and are often given their equipment with less instruction on how or where to use it. The devices themselves seem more important, and are constantly being updated and refined with each new field test. Hence, the Gospog Masters varry significantly in appearnace and activity. Some adopt a realm specific style of dreass - to better "empathize" woth their charges - but most remain true to their Nile origins and wear the baroqueness of their Weird Science devices like a badge of honor. The devices themselves most often consist of an oversized helmet, crackling with strange energies to command the gospogs, and a chest harness with numerous dials with which to issue specific commands. Gospog Control Rays are a common variant, and Gospog Control Wires are a recent innovation to avoid possible Long Range Contradictions. The only constant among Gospog Masters is a singular monomania - extreme again even by Nile standards - and more than a touch of madness. Some working on the project feel it is dangerous to conect a single human mind to so many inhuman ones, but none have expressed doubts where the Pharoah might hear.