One of the mysterious Ultra Beasts.

UB-04:Blaster (properly known as Celesteela) is a Steel/Flying type with the Beast Boost ability. In contrast to its Sun-Version exclusive counterpart Kartana, its height and weight are the largest of the Ultra Beasts at a whopping 2204.4 lbs and 30'04". Yeah. This thing weighs over a literal ton. It is exclusive to Moon version.