This little fella visits me sometimes, too. First encounter I did not notice him in the server room and I ran into him and the game crashed. The second and third time I encountered him, I saw him approaching from the corner of my eye and made sure to avoid him. When moving from room to room, I did not turn my back on him, because if I did my screen would flash black. So, I would strafe and backpedal while I did random chores and eventually, it bee-booped out of the room and disappeared.