Rev. 19:12 shows the Lord Jesus Christ having "many crowns," and in Rev. 19:16 He is called "KING OF KINGS, AND LORD OF LORDS." He is also called King of Kings in 1 Timothy 6:15 & in Rev. 17:14.
Rev. 19:12, "His eyes were as a flame of fire, and on his head were many crowns; and he had a name written, that no man knew, but he himself."
Rev. 19:16, "And he hath on his vesture and on his thigh a name written, KING OF KINGS, AND LORD OF LORDS."
Will the Antichrist beast be called King of Kings? Nebuchadnezzar king of the Babylon was called king of kings in Ezekiel 26:7 and in Daniel 2:37. Artaxerxes king of Persia was called king of kings in Ezra 7:12. Artaxerxes I - Wikipedia Artaxerxes I (/ˌɑːrtəˈzɜːrksiːz/, Old Persian: 𐎠𐎼𐎫𐎧𐏁𐏂𐎠 Artaxšaçāʰ;[2][3] Greek: Ἀρταξέρξης)[4] was the fifth King of Kings of the Achaemenid Empire, from 465 to December 424 BC.[5][6]He was the third son of Xerxes I. The head of the Sasanian Empire was the [shahanshah] (king of kings), also simply known as the shah (king).
Here is a list of rulers in Persia (Iran) from who called themselves king of kings from 224 A.D. to 651 A.D. List of monarchs of the Sasanian Empire - Wikipedia
Shah (/ʃɑː/; Persian: شاه, Šāh [ʃɒːh], lit. 'king') is a royal title that was historically used by the leading figures of Iranian monarchies.[1] It was also used by a variety of Persianate societies, such as the Ottoman Empire, the Kazakh Khanate, the Khanate of Bukhara, the Emirate of Bukhara, the Mughal Empire, the Bengal Sultanate, historical Afghan dynasties, and among Gurkhas.[2]Rather than regarding himself as simply a king of the concurrent dynasty (i.e. European-style monarchies), each Iranian ruler regarded himself as the Shahanshah (شاهنشاه, Šâhanšâh, lit. 'King of Kings') or Padishah (پادشاه, Pâdešâh, lit. 'Master King') in the sense of a continuation of the original Persian Empire.
Šāh, or Šāhanšāh (King of Kings) to use the full-length term, was the title of the Persian emperors. It includes rulers of the first Persian Empire, the Achaemenid dynasty, who unified Persia in the sixth century BC, and created a vast intercontinental empire, as well as rulers of succeeding dynasties throughout history until the 20th century and the Imperial House of Pahlavi.
Iran's last King Mohammad Reza Pahlavi, father of crown prince Reza Pahlavi, used the title of "King of Kings according to Mohammad Reza Pahlavi - Wikipedia
"Following his father’s death in 1980, Reza Pahlavi, son of the last Shah of Iran, declared himself the new king of Iran. At the age of 63, he has adopted the mantle of ‘King of Kings,’ the grand title his father assumed before he was driven into exile by the Iranian people." FULL STORY at above link.
(Although Reza Pahlavi, a Shia Muslim, declared himself the new king of Iran and adopted the mantle of 'King of Kings', he still is seen in the eyes of the world as the crown prince, son of a king or a little horn.)
Who is Crown Prince Reza Pahlavi? Can he return to power in Iran? (ibtimes.sg)"Pahlavi, who named himself the 'king of kings' in Iran following the 1980 death of his father in Egypt, where he as in exile. In the 1980s Pahlavi enjoyed the patronage of the American spy organisation CIA. However, the active support of the US establishment to Pahlavi petered out after the Iran-Contra scandal of the 1980s."
If the Iranian people overthrew their government and asked Pahlavi to return he could return peaceably promising them a parliament to make their own laws, but also could rise to power to become a king with a parliament."Pahlavi He still remains the monarch as per the Iranian Constitution of 1906 that gave legitimacy to the Pahlavi dynasty. In more recent year he has called himself the former Crown Prince of Iran. Reza Pahlavi is secular in political outlook and pro-western like his father. "I believe Iran must be a secular, parliamentary democracy. The final form has to be decided by the people," he said in June 2018." FULL STORY at above link.
Daniel 11:21, "And in his estate shall stand up a vile person, to whom they shall not give the honour of the kingdom: but he shall come in peaceably, and obtain the kingdom by flattery" possibly meaning that the present Islamic regime won't give Pahlavi the honour of the kingdom to be their king. Time will tell if Pahlavi is the Little Horn of Daniel or not, and the Antichrist beast of Rev. 13:2b-10