Jagan extermination

In this world there is good and evil. The Japajing extermination force and the Japajings. The Japajing are spiritual beings that can posses animals and turn them into berserk, bizarre monsters. In extremely rare cases they posses humans and gain intelligence. We call these type of Japajings, the Jaganase. All of these creatures can be spotted with three main features. Pitch black eyes, three rows of teeth and 5cm long horns, that are also 2cm wide and are black in color. Now that I told you this I must give you a next piece of advice. Trust no one, don't even trust what you have read so far as that is only a cover up to protect me from them finding out. There is no good or evil, that is just a facade. The reason is that the Japajing extermination force is actually corrupt on the inside and paint the Japajings as the evil entity's that want to destroy human life for no reason. There are more then just the evil kind they describe, they have multiple of them working on the inside of the force. There are actually five types, one of them is the one I described earlier and is the only one avaliable to the public. The second type have a normal hair color and no horns but they have two rows of teeth, the force covers this up by saying that this is the result of training to be able to handle more blows from their enemies. The third type has completely black eyes but no other known traits. The fourth type has purple eyes and purple horns, the force covers this up by explaining that with enough exposure to the spiritual energy of the Japajings can cause physical mutations in the human body. The fifth and final type is the most dangerous and even speaking or writing it can get you killed. Even I don't know all the information but from my extensive research I have concluded some main traits. There hair is completely black, they have no horns and they have marron eyes. The most defin- (before the note was completed there was sounds of gunshots and the person of the note died while writing it, blood stains the note and no one will everyone know who was this mysterious researcher.)