Giants = Nephilim, Anakim/Anak, Rephaim and probably many more names like Annunaki.
There were many angels who had their own choice/will to become opponents of The Most Highest True Good God I AM.
Genesis 6:3-20 New Century Version (NCV) 3 The Lord said, “My Spirit will not remain in human beings forever, because they are flesh. They will live only 120 years.” 4 The Nephilim were on the earth in those days and also later. That was when the sons of God had sexual relations with the daughters of human beings. These women gave birth to children, who became famous and were the mighty warriors of long ago. 5 The Lord saw that the human beings on the earth were very wicked and that everything they thought about was evil. 6 He was sorry he had made human beings on the earth, and his heart was filled with pain. 7 So the Lord said, “I will destroy all human beings that I made on the earth. And I will destroy every animal and everything that crawls on the earth and the birds of the air, because I am sorry I have made them.” 8 But Noah pleased the Lord.
Noah and the Great Flood Genesis 6:9 This is the family history of Noah. Noah was a good man, the most innocent man of his time, and he walked with God. 10 He had three sons: Shem, Ham, and Japheth.
Numbers 13:33 And there we saw the Nephʹi·lim, the sons of Aʹnak,+ who are from* the Nephʹi·lim, and in comparison we seemed like grasshoppers, both to us and to them.”
Deuteronomy 1:28 28 What kind of place are we going to? Our brothers made us lose heart by saying, “They are a people greater and taller than we are, and their cities are great and fortified to the heavens, and we saw the sons of the Anʹa·kim there.”’
Deuteronomy 9:1, 2 9 “Hear, O Israel, today you are crossing the Jordan to go in and dispossess nations greater and mightier than you, cities great and fortified to the heavens, 2 a people great and tall, the sons of the Anʹa·kim, about whom you know and have heard it said, ‘Who can stand up to the sons of Aʹnak?’
Numbers 13:22 22 When they went up into the Negʹeb, they came to Hebʹron, where A·hiʹman, Sheʹshai, and Talʹmai, the Anʹa·kim, were living. Incidentally, Hebʹron had been built seven years before Zoʹan of Egypt.
Joshua 11:21 21 At that time Joshua wiped out the Anʹa·kimfrom the mountainous region, from Hebʹron, Deʹbir, Aʹnab, and all the mountainous region of Judah and all the mountainous region of Israel. Joshua devoted them and their cities to destruction.
Joshua 15:13, 14 13 And to Caʹleb the son of Je·phunʹneh, he gave a share among the descendants of Judah at the order of Jehovah to Joshua, namely, Kirʹi·ath-arʹba (Arʹba was the father of Aʹnak), that is, Hebʹron. 14 So Caʹleb drove out from there the three sons of Aʹnak: Sheʹshai, A·hiʹman, and Talʹmai,descendants of Aʹnak.
Even Mr. Goliath seemed to be a descendant of either of Ananakim or of Rephaim (fallen wicked angels), because they lived in Gath.
Joshua 11:22 22 There were no Anʹa·kim left in the land of the Israelites; they remained only in Gazʹa, in Gath, and in Ashʹdod.
1 Samuel 17: 4 Then a champion came out from the camps of the Phi·lisʹtines; his name was Goliath,+ from Gath,+ and his height was six cubits and a span.*
1 Samuel 17:23 23 While he was speaking with them, there came the champion named Go·liʹath, the Phi·lisʹtine from Gath. He came out from the battle line of the Phi·lisʹtines, and he spoke the same words as before, and David heard him.
2 Samuel 21:20, 21 20 War broke out yet again at Gath, where there was a man of extraordinary size, with 6 fingers on each hand and 6 toes on each foot, 24 in all; and he too was a descendant of the Rephʹa·im. 21 He kept taunting Israel. So Jonʹa·than the son of Shimʹe·i, David’s brother, struck him down.
Deuteronomy 2:11 11 The Rephʹa·im were also considered like the Anʹa·kim, and the Moʹab·ites used to call them Eʹmim.
1 Chronicles 20:6-8 6 ) War broke out yet again at Gath, where there was a man of extraordinary size, with 6 fingers on each hand and 6 toes on each foot, 24 in all; and he too was a descendant of the Rephʹa·im. 7) He kept taunting Israel. So Jonʹa·than the son of Shimʹe·a,David’s brother, struck him down.8) These were descendants of the Rephʹa·im in Gath, and they fell by the hand of David and by the hand of his servants.
Deuteronomy 2:10 (The Eʹmim+ formerly lived there, a people great and numerous and tall like the Anʹa·kim. 11 The Rephʹa·im+ were also considered like the Anʹa·kim,+ and the Moʹab·ites used to call them Eʹmim.
Jude 1: 6 And the angels who did not keep their original position but forsook their own proper dwelling place,+ he has reserved with eternal bonds in dense darkness for the judgment of the great day.+ 7 In the same manner, Sodʹom and Go·morʹrah and the cities around them also gave themselves over to gross sexual immorality* and pursued unnatural fleshly desires;+ they are placed before us as a warning example by undergoing the judicial punishment of everlasting fire.+
Expanded Bible (EXB) Jude 6:6 And remember the angels who did not keep their ·place of power [position of authority; L own domain/rule] but left their proper ·home [dwelling place]. The Lord has kept these angels in ·darkness [gloom; C the nether world or underworld; the place of the dead], bound with everlasting chains, to be judged on the great day [C the final day of judgment; 2 Pet. 2:4].
Genesis 14:5 So in the 14th year, Ched·or·la·oʹmer and the kings who were with him came and defeated the Rephʹa·im in Ashʹte·roth-kar·naʹim, the Zuʹzim in Ham, the Eʹmim in Shaʹveh-kir·i·a·thaʹim,
Deuteronomy 3: 11 For King Og of Baʹshan was the last remaining one of the Rephʹa·im. His bier*was made of iron,* and it is still in Rabʹbah of the Amʹmon·ites. It is nine cubits* long and four cubits wide, by the standard cubit.
Numbers 13:22 When they went up into the Negʹeb, they came to Hebʹron, where A·hiʹman, Sheʹshai, and Talʹmai, the Anʹa·kim, were living. Incidentally, Hebʹron had been built seven years before Zoʹan of Egypt.
1 Peter 3: 18 For Christ died once for all time for sins,+ a righteous person for unrighteous ones,+ in order to lead you to God.+ He was put to death in the flesh+ but made alive in the spirit.+ 19 And in this state he went and preached to the spirits in prison,+ 20 who had formerly been disobedient when God was patiently waiting* in Noah’s day,+ while the ark was being constructed,+ in which a few people, that is, eight souls,* were carried safely through the water.+
2 Peter 2 :4 Certainly God did not refrain from punishing the angels who sinned,+ but threw them into Tarʹta·rus,*+ putting them in chains* (possibly pits) of dense darkness to be reserved for judgment.+ 5 And he did not refrain from punishing an ancient world,+ but kept Noah, a preacher of righteousness,+ safe with seven others+ when he brought a flood upon a world of ungodly people.+ 6 And by reducing the cities of Sodʹom and Go·morʹrah to ashes, he condemned them,+ setting a pattern for ungodly people of things to come.+
In the Christian Greek Scriptures, a prisonlike abased condition into which the disobedient angels of Noah’s day were cast. At 2 Peter 2:4, the use of the verb tar·ta·roʹo (to “cast into Tartarus”) does not signify that “the angels who sinned” were cast into the pagan mythological Tartarus (that is, an underground prison and place of darkness for the lesser gods). Rather, it indicates that they were abased by God from their heavenly place and privileges and were delivered over to a condition of deepest mental darkness respecting God’s bright purposes. Darkness also marks their own eventuality, which the Scriptures show is everlasting destruction along with their ruler, Satan the Devil. Therefore, Tartarus denotes the lowest condition of abasement for those rebellious angels. It is not the same as “the abyss” spoken of at Revelation 20:1-3.
Tarsus is most likely not the same as hell, because these fallen angle’s spirits would most likely be let out from hell.