Revelation 9

• A star fell from the sky at the sound of the 5th angel's trumpet. It would open the abyss with a key. 

• The sun and sky was darkened with smoke
• Out of the smoke came locusts in mass to torture every man without God's seal on his forehead for 5 months.
• The locusts had stingers like scorpions, crowns on their heads, human faces, horse-like bodies, teeth of a lion, and a chest plate for protection. 
• The angel of the abyss was over them who's name meant Destroyer.

• At the 6th angel's trumpet, one of the four horns that make up the altar before God, said " release the four angels bound by the Euphrates river, to kill a third of mankind.

 Revelation 9:16-21

¹⁶ The number of the mounted troops was twice ten thousand times ten thousand. I heard their number.

 ¹⁷ The horses and riders I saw in my vision looked like this: Their breastplates were fiery red, dark blue, and yellow as sulfur. The heads of the horses resembled the heads of lions, and out of their mouths came fire, smoke and sulfur. ¹⁸ A third of mankind was killed by the three plagues of fire, smoke and sulfur that came out of their mouths. ¹⁹ The power of the horses was in their mouths and in their tails; for their tails were like snakes, having heads with which they inflict injury.

 ²⁰ The rest of mankind who were not killed by these plagues still did not repent of the work of their hands; they did not stop worshiping demons, and idols of gold, silver, bronze, stone and wood—idols that cannot see or hear or walk. ²¹ Nor did they repent of their murders, their magic arts, their sexual immorality or their thefts.

images: http://www.truthinlove.com/Pictures/large_Locusts.jpg
http://www.coastalbend.edu/acdem/math/campbel7/revelation/images/rev_plaguesof7bowls.jpg