You are both right. I am aware it's Spectator I was just too lazy to fix the thread title. And I also agree Spectator in game should use smaller model. Maybe that's why I instinctively write Beholder.
There is one more think to test. According to Monster Manual: Like any beholder, a spectator views itself as the epitome of its kind, and it has an intense hatred of other spectators. If two spectators encounter one another, they almost always fight to the death. So let's open the Iron Flask in Underdark and see what happens.