Magos Biologis Egrid Cath has been studying biological life for hundreds of years. It was only by a quirk of fate that he was not stationed on Tyran when the hive fleet first made contact with the Imperial world. Magos Cath, who was originally chosen to head the Mechanicus operations on Tyran Prime, was supplanted by his rival Magos Varnak in a successful political maneuver that would prove to be most fortunate for Magos Cath. After word had spread of the new threat that faced the Imperium from beyond the cold of galactic space Magos Cath became obsessed with this new form of life that was completely beyond anything humanity had seen before. He covetously studied every specimen that he could acquire for both Imperial and less official sources. Eventually he became the leading researcher of the Tyranid menace. Magos Cath has access to all possible data on the Tyranids and has even been experimenting on live specimens.
Magos Cath has developed a method of shielding live Tyranids from the Hive Mind and has used this technology to study the effects of separation from the Hive Mind on Tyranid subjects, especially synapse creatures. He has likewise developed a means of controlling several Tyranid species. Through various implants he has created a synthetic "Hive Mind" that he can control with his own will. Several field tests have yielded promising results and Magos Cath has also begun using gene samples to grow specimens in his biolabs. These specimens are more susceptible to control and have been engineered with increased aggressive tendencies even beyond those seen in most other hive fleets with the exception of Hive Fleet Behemoth.
Cath's progress has not been without setbacks. On more than one occasion his forces have come to blows with the Ordo Xenos. Fortunately for Cath none of the Inquisitors who have discovered the truth about his Tyranid control experiments have survived to bring the might of the Inquisition to bare. There are likewise some factions within the Adeptus Mechanicus who would consider Magos Cath's experiments heretical and there would certainly be conflict if it came to light that he was working with live Tyranids within the confines of the forgeworld, but soon he intends to reveal his successes and show the greater Imperium the benefits of his vision.
I present to you my new project. A Tyranid army controlled by the Adeptus Mechanicus. I'm having a lot of trouble getting models for my Tyranid project since a lot of the larger Tyranids are currently unavailable. But luckily I have been able to get a hold of a Hive Tyrant and he will be my next conversion. For now here is the first Tyranid I've ever painted. Hope you enjoy.