This is in reply to your 4/13 post Will there be other ones? in which you stated the following:

"This happened during the Egypt plagues:

Psalm 78:49 He cast upon them the fierceness of his anger, wrath, and indignation, and trouble, by sending evil angels among them.

So, in addition to the tribulation locusts with stingers & the fire breathing horses with lion heads, will there be other evil angels on the earth during the tribulation?"

(Some people believe that Satan was cast permanently out of heaven a long time ago, but the Bible verses below were a revelation of the future given to the apostle John and written down in  around 95 A.D. which show Satan and his (fallen) angels being cast permanently out of heaven because "neither was their place found any more in heaven.")

Rev. 12:7-9, " And there was war in heaven: Michael and his angels fought against the dragon; and the dragon fought and his angels, And prevailed not; neither was their place found any more in heaven.  And the great dragon was cast out, that old serpent, called the Devil, and Satan, which deceiveth the whole world: he was cast out into the earth, and his angels were cast out with him."  This happens right about the same time that the woman flees into the wilderness for 1,260 days which is shown in Rev. 12:6.