Ceiling cat is known to teleport between houses and poke his head through holes in the ceiling to watch people to do things.
If there's no hole in your ceiling, he'll make one. This is quite controversial as some are led to believe that Jews are trying to steal their ceilings, and then sell the material for profit. But, if Ceiling Cat does not approve of something, he is known to destroy entire planets with his jew killin eye lazers, which is why noone complains.
Ceiling Cat cannot be stopped. But he may be temporarily defeated.