It has gobbled mountains and swallowed whole buildings, according to reports. It's one of the Ultra Beasts.
A dangerous Ultra Beast, it appears to be eating constantly, but for some reason its droppings have never been found.
Although it's alien to this world and a danger here, it's apparently a common organism in the world where it normally lives.
An unknown life-form called a UB. It may be constantly hungry—it is certainly always devouring something.