Rev 9:3-11 KJV 3 And there came out of the smoke locusts upon the earth: and unto them was given power, as the scorpions of the earth have power. 4 And it was commanded them that they should not hurt the grass of the earth, neither any green thing, neither any tree; but only those men which have not the seal of God in their foreheads. 5 And to them it was given that they should not kill them, but that they should be tormented five months: and their torment was as the torment of a scorpion, when he striketh a man. 6 And in those days shall men seek death, and shall not find it; and shall desire to die, and death shall flee from them. 7 And the shapes of the locusts were like unto horses prepared unto battle; and on their heads were as it were crowns like gold, and their faces were as the faces of men. 8 And they had hair as the hair of women, and their teeth were as the teeth of lions. 9 And they had breastplates, as it were breastplates of iron; and the sound of their wings was as the sound of chariots of many horses running to battle. 10 And they had tails like unto scorpions, and there were stings in their tails: and their power was to hurt men five months. 11 And they had a king over them, which is the angel of the bottomless pit, whose name in the Hebrew tongue is Abaddon, but in the Greek tongue hath his name Apollyon.
Rev 9:14-19 KJV 14 Saying to the sixth angel which had the trumpet, Loose the four angels which are bound in the great river Euphrates. 15 And the four angels were loosed, which were prepared for an hour, and a day, and a month, and a year, for to slay the third part of men. 16 And the number of the army of the horsemen were two hundred thousand thousand: and I heard the number of them. 17 And thus I saw the horses in the vision, and them that sat on them, having breastplates of fire, and of jacinth, and brimstone: and the heads of the horses were as the heads of lions; and out of their mouths issued fire and smoke and brimstone. 18 By these three was the third part of men killed, by the fire, and by the smoke, and by the brimstone, which issued out of their mouths. 19 For their power is in their mouth, and in their tails: for their tails were like unto serpents, and had heads, and with them they do hurt.
Rev 16:12-14 KJV 12 And the sixth angel poured out his vial upon the great river Euphrates; and the water thereof was dried up, that the way of the kings of the east might be prepared. 13 And I saw three unclean spirits like frogs come out of the mouth of the dragon, and out of the mouth of the beast, and out of the mouth of the false prophet. 14 For they are the spirits of devils, working miracles, which go forth unto the kings of the earth and of the whole world, to gather them to the battle of that great day of God Almighty.