The following are just my ideas. So dont be like OMG that would never happen!, for those that do I say....... post your ideas then fuck wit! Now to the idea Now this one I thought about years ago, watching a documentary about a parasite called Leucochloridium paradoxum (Flatworm), which is found in cats,snails,rats,grasshoppers,fish,birds and humans. for a few details to what it does go here (http://youtu.be/EWB_COSUXMw.) Thats just the snail, in rats it makes them hang out where cats are or will be, to get eaten and continue its life cycle. Grasshoppers the worm, attacks it nervous system and makes it jump in a pond or river so it drowns then the worm will swim away, to get eaten by a fish. When the fish is infected, it swims and jumps near the surface, so grazing birds will eat it. Now in humans it apparently causes Schizophrenia which is: A long-term mental disorder of a type involving a breakdown in the relation between thought, emotion, and behavior, leading to faulty perception, inappropriate actions and feelings, withdrawal from reality and personal relationships into fantasy and delusion, and a sense of mental fragmentation. This has not been proven, although people who have the parasite and then taken the drug associated with schizophrenia, it has anti-parasitic affects (i.e the above mentioned parasite) Now the point of all the above, is to show what it does on its own. Now say there's a lab somewhere altering it, making it a biological weapon, to control humans, maybe it goes wrong, maybe it hasn't and said countary wanted this? There are many mind controlling bugs out there, that was just one I'm not going to list them all, because it would be the same thing again. I'll edit this post when i have or find more ideas, I mean folks just use your imagination and post your ideas here.