Abaddon, Angel of the bottomless pit, Apollyon:

"And they had as king over them the ANGEL OF THE BOTTOMLESS PIT, whose name in Hebrew is ABADDON (meaning destroying angel), but in Greek he has the name APOLLYON (meaning destroyer)." (Revelation 9:11, NKJV)

Accuser of our brethren:

"Then I heard a loud voice saying in heaven, "Now salvation, and strength, and the kingdom of our God, and the power of His Christ have come, for the ACCUSER OF OUR BRETHREN, who accused them before our God day and night, has been cast down."" (Revelation 12:10)

Adversary, roaring lion:

"Be sober, be vigilant; because your ADVERSARY the devil walks about like a ROARING LION, seeking whom he may devour." (1Peter 5:8)

Angel of light:

"And no wonder! For Satan himself transforms himself into an ANGEL OF LIGHT." (2Corinthians 11:14)

Antichrist:

". . . and every spirit that does not confess that Jesus Christ has come in the flesh is not of God. And this is the spirit of the ANTICHRIST, which you have heard was coming, and is now already in the world." (1John 4:3)

Beelzebub, Ruler of the Demons:

"But some of them said, 'He casts out demons by BEELZEBUB, the RULER OF THE DEMONS.' ” (Luke 11:15)

Belial:

"And what accord has Christ with BELIAL? Or what part has a believer with an unbeliever?" (2Corinthians 6:15)

Devil:

"Then Jesus was led up by the Spirit into the wilderness to be tempted by THE DEVIL. " (Matthew 4:1)

Dragon, Great dragon, Serpent of old:

"And war broke out in heaven: Michael and his angels fought with the DRAGON; and the DRAGON and his angels fought, but they did not prevail, nor was a place found for them in heaven any longer. So the GREAT DRAGON was cast out, that SERPENT OF OLD, called the DEVIL and SATAN, who deceives the whole world; he was cast to the earth, and his angels were cast out with him." (Revelation 12:7-9)

Enemy, Wicked One:

"The field is the world, the good seeds are the sons of the kingdom, but the tares are the sons of THE WICKED ONE. The ENEMY who sowed them is the DEVIL, the harvest is the end of the age, and the reapers are the angels." (Matthew 13:38-39)

Gates of Hell:

"And I also say to you that you are Peter, and on this rock I will build My church, and the GATES OF HELL shall not prevail against it." (Matthew 16:18)

God of this age:

"But even if our gospel is veiled, it is veiled to those who are perishing, whose minds the GOD OF THIS AGE has blinded, who do not believe, lest the light of the gospel of the glory of Christ, who is the image of God, should shine on them." (2Corinthians 4:3-4)

Great fiery red dragon:

"And another sign appeared in heaven: behold, a GREAT, FIERY RED DRAGON having seven heads and ten horns, and seven diadems on his heads." (Revelation 12:3)

Lucifer:

"How you are fallen from heaven, O LUCIFER, son of the morning! How you are cut down to the ground, you who weakened the nations!" (Isaiah 14:12)

Man of sin, son of perdition:

"Let no one deceive you by any means; for that Day will not come unless the falling away comes first, and the MAN OF SIN is revealed, THE SON OF PERDITION, who opposes and exalts himself above all that is called God or that is worshiped . . ." (2Thessalonians 2:3-4)