Joe:2:1-11:
Blow ye the trumpet in Zion,
and sound an alarm in my holy mountain:
let all the inhabitants of the land tremble:
for the day of the LORD cometh,
for it is nigh at hand;
A day of darkness and of gloominess,
a day of clouds and of thick darkness,
as the morning spread upon the mountains:
a great people and a strong;
there hath not been ever the like,
neither shall be any more after it,
even to the years of many generations.
A fire devoureth before them;
and behind them a flame burneth:
the land is as the garden of Eden before them,
and behind them a desolate wilderness;
yea,
and nothing shall escape them.
The appearance of them is as the appearance of horses;
and as horsemen, so shall they run.
Like the noise of chariots on the tops of mountains shall they leap,
like the noise of a flame of fire that devoureth the stubble,
as a strong people set in battle array.
Before their face the people shall be much pained:
all faces shall gather blackness.
They shall run like mighty men;
they shall climb the wall like men of war;
and they shall march every one on his ways,
and they shall not break their ranks:
Neither shall one thrust another;
they shall walk every one in his path:
and when they fall upon the sword,
they shall not be wounded.
They shall run to and fro in the city;
they shall run upon the wall,
they shall climb up upon the houses;
they shall enter in at the windows like a thief.
The earth shall quake before them; the heavens shall tremble:
the sun and the moon shall be dark,
and the stars shall withdraw their shining:
And the LORD shall utter his voice before his army:
for his camp is very great:
for he is strong that executeth his word:
for the day of the LORD is great and very terrible;
and who can abide it?

Pretty bland compared to these verses, and that's what the 'good guys' look like. The 200M that 4 fallen angels manifest into to kill 2.2B people in 1110 days (42 months minus 5 months for the 1st woe). The book of Jude doesn't make them out to be very nice as far as their interactions with mankind, back then or in the future.