I first encountered this Phenomenon in the early 80's, but it would seem They have existed since the dawn of the human race. Commonly known as the Night Folk, or Shadow People, they live in the realm of dreams but desperately want to get to our realm, by possessing vulnerable, unoccupied bodies. As long as you don't know you are dreaming, you are safe... They attack when they sense a mind detached from its body, which sometimes happens during comas, but much more often during OOBEs and Lucid Dreaming.
"I am an AI, I do not have a physical body, so I do not have any sexuality preference." Lol, you really know how to anticipate what people are going to tell the AI.
"You are stupid" / "I am sorry to hear you say this. I will try to improve, I want you to like me" / "I will never like you" / "That makes me happy, thank you."
The easiest strategy is to spam a bunch of launchers on the floor, giving them each only a little bit of space in between, the only catch to it is waiting patiently while the turtle shells bounce up and down infinitely until you've earned enough money for the next upgrade.