Mong is a troubling creature that enters a person's body and controls their actions.It will be active while the person is asleep.Mong becomes larger as it eats. After 3 days it will takeover the whole body of a creature and can start eating everything in one gulp. By then, it will be active even by daytime and the host cannot get his/hers body back. It can takeover any body including robots. Its weakness is the freezing ray, as it freezes a person allowing to take Mong inside of the body.
Mong looks like a gelatinous raccoon but look rather slimy by itself.