5th-century BC Babylonian kings

Xerxes I (Old Persian: ??????? Xšayār̥šā; Greek: Ξέρξης; c.– August 465 BC), commonly known as Xerxes the Great, was the fourth King of Kings of the Achaemenid Empire, ruling from 486 to 465 BC. He was the son and successor of Darius the Great (r. 522–486 BC) and his mother was Atossa, a daughter of Cyrus the Great (r. 550–530 BC), the founder of the Achaemenid empire. Like his father, he ruled the empire at its territorial apex. He ruled from 486 BC until his assassination in 465 BC at the hands of Artabanus, the commander of the royal bodyguard.

Xerxes II (Xšayarša) was a Persian king and the son and successor of Artaxerxes I. After a reign of forty-five days, he was assassinated in 424 BC by his brother Sogdianus, who in turn was murdered by Darius II. He is an obscure historical figure known primarily from the writings of Ctesias. He was reportedly the only legitimate son of Artaxerxes I and his Queen Damaspia. He is known to have served as Crown Prince.

Darius II (Darayavahuš), was king of the Persian Empire from 423 BC to 405 BC.

Sogdianus ( or ) was briefly a ruler of the Achaemenid Empire for a period in 424–423 BC. His short rule—lasting not much more than six months—and the little recognition of his kingdom are known primarily from the writings of Ctesias; who is known to be unreliable. He was reportedly an illegitimate son of Artaxerxes I by his concubine Alogyne of Babylon.

Darius the Great or Darius I (Old Persian: Dārayava(h)uš, New Persian: داریوش‎ Dāryuš; Hebrew: דָּרְיָוֶשׁ,  Darəyaveš,  Dāryāwéš; c. 550–486 BCE) was the fourth Persian king of the Achaemenid Empire. He ruled the empire at its peak, when it included much of West Asia, the Caucasus, parts of the Balkans (Thrace-Macedonia, and Paeonia), most of the Black Sea coastal regions, parts of the North Caucasus, Central Asia, as far as the Indus Valley in the far east and portions of north and northeast Africa including Egypt (Mudrâya), eastern Libya, and coastal Sudan.