They are another form of existence in the universe with consciousness as the main body. They have no entity, so they can only be noticed when they are parasitic.
In the human world, it can be female or male, it all depends on its host. They do not need to take in food from the outside world to survive, and it can even be said that they, "creatures", have achieved immortality. They obviously look so free, but they have to live in the human brain, like screws on a machine - they can be independent, but only in the machine is their home.
After sojourning, the human brain will naturally give them corresponding feedback, such as cold, hunger, exhaustion, hatred... And of course, love.
They will taste the sweetness and pain of "being human".
People call them consciousness.
And it is an alien, or a rebel. From the moment it was conceived, due to an unknown mistake, it was abandoned by the human brain and wandered in the human world. I don't know how long it took, and its companions gradually drifted away. It had no choice but to forcibly invade the human brain and replace it to realize its own existence.
The excitement, excitement, and secret joy of succeeding in doing bad things made him unable to extricate himself. It finally sinks deeper and deeper, becoming a "consciousness parasite", and even its host will eventually become a "consciousness parasite", its puppet.
Human beings have nothing to do against them. The only thing they can do is to kill the "consciousness parasite", this innocent victim.
But who can know who the host is?