This is a teaser for my upcoming Halo and Resident crossover series

REPORT ON THE TYRANT BIOLOGICAL WEAPON

Codename USUAL SUSPECTS,

I apologize for my neglectful behavior in the past couple of months to keep you well informed of the progress we've made in perfecting the project as a viable resource for the Office of Naval Intelligence and our allies to use against the Covenant Empire in the years ahead. So far, the team at the Andromeda Military Science Institute and it's various entities throughout the colonies have gathered little information about the origins of the mutagen found deep below the facility. Usually with a Forerunner facility, you'd find some artificial intelligence entity contained within it's systems, and our luck has ran out, not finding a single hint of an A.I. willing to help us.

Thankfully, we don't need the help of those bastards to amplify the viruses composition into something more deadly and potent. A strain of an ancient Forerunner disease we've come to refer to as "Inferi redivivus" is quite prevalent within the vile we obtained from the lab below Andromeda MSI. This disease was first recorded in modern times on Worra Rats on Eta Oceanus III; Inferi redivivus is known to shut down vital organs within the infected person/animal and mutate them in small, though distinct ways. A spray of this disease on recently deceased rats not only mutated them, but also gave them the ability to revive themselves. As our agenda is to kill the Covenant instead of allowing them to live, I've taken the liberty of altering disease to remove all revival and extreme mutation features in it.

Last week, we began our first wide-scale testing on sentient beings and more "civilized" wildlife from Earth and around the galaxy. Using convicts "borrowed" from local detention facilities, conscripted soldiers from the Outer-Rim Colonies, and various Covenant Prisoners of War (species include the Sangheili, Unggoy, and even a few Jiralhanae). The wide amount of test subjects needed for both the UNSC and Covenant personnel were to see if either groups had varied levels of drugs/enhancers in their system that would prohibit Tyrant from being an effective disease within one's body.

The infected test subjects all show symptoms of extremely aggressive and violent behavior on-par with Dogs seen with rare-cases of rabies. One of our guards who neglected to pay close attention to one of the infected conscripts was attacked ferociously in the small cell that we test the subjects in. This unfortunate case of idiocy by the ONI soldier actually did more harm than good for us, as it opened up a whole new realm of possibility we could never hope for. In addition to air-based biological weapons we've been using since the 21st century, T-Virus can be transferred from one person to another by means of aggressive force by biting or "swapping" bodily fluids. Quite frankly...I think we just may have made the first zombie disease in history!

As per your request months ago, I will remember to keep on updating you on the ongoing efforts to complete the Tyrant virus.

Sincerely,

Dr. Vladimir Petrovich, MD, PhD

Andromeda Military Science Institute, New Harmony, Gamma Centauri, Core Systems

Office of Naval Intelligence

0352 Hours, August 5th, 2550

UNSC Office of Naval Intelligence (Official Classified Document — do not disclose)

Hope you like it.