fighting enemy from within

Iam fibrowhat. i came from another dimension. i have been controlling human being for a while now. i could attack them by disabling their movements, switching their power on and off.  Iam invicible and i left no mark, no trace  of my being there. who would believe them. some of the time, i have been able to make them believe that it is all in their mind.

Who are my chosen victim, you might asked? well, its really an easy question to answer. no one in particular, its a random act, so you know there is no hard feelings towards anyone because of their race, skin colour, religion. I have also prey on animals,  only if they could talk.

So what is my objective in all these sagas. Do I do it for research purposes so one day, my planet can attack earth people?  or is this for the benefit of our planet health system.

Well this is a test about human endurance.