The fifth angel poured out his vial upon the seat of the beast; and his kingdom was full of darkness; and they gnawed their tongues for pain. Revelation 16:10
How many heads, horns, and crowns did the red dragon of Revelation 11 have?
Seven heads, ten horns, and seven crowns
And there appeared another wonder in heaven; and behold a great red dragon, having seven heads and ten horns,
and seven crowns upon his heads. Revelation 12:3