Artaxerxes IV, Shah of Persia

Shah Arses of Persia
also known by his regnal name Artaxerxes IV
(Old Persian: 𐎠𐎼𐎫𐎧𐏁𐏂𐎠 Artaxšaçāʰ ) was the twelfth Achaemenian (Hakhamaneshi) Shah of Shahs (King of Kings) of Iran from 338 to 336 BC.
Arses ascended the throne, after his father Artaxerxes III—who had created a resurgence of the Persian Empire—was poisoned by the eunuch Bagoas.

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"On his ascension to the throne, Arses most likely assumed the regnal name of Artaxerxes IV. He was put on the throne by Bagoas due to his youth, which the latter sought to take advantage of in order to control him. Around the same period, most of the Greek city-states had joined the Greel league under the leadership of the Macedonian king Philip II, who took advantage of the events in Persia by demanding compensation from the country for helping the town of Perinthus during the reign of Artaxerxes III.
Arses declined, and as a result, a Greek expedition was started with Philip II as general, who sent 10,000 Macedonian soldiers into Asia in 336 BC. At the same time, however, Arses was determined on trying to free himself from Bagoas' authority and influence; he made an unsuccessful effort to have the latter poisoned, only to be poisoned himself along with the rest of his family by Bagoas, who put Arses' cousin Darius III on the throne.
Macedonian propaganda, made in order to legitimize the conquests of Alexander of Macedon a few years later, accused Darius III of playing a key role in the murder of Arses, who was portrayed as the last king of the Achaemenid royal house."
--Briant, Pierre (2002). From Cyrus to Alexander; A History of the Persian Empire Eisenbrauns. pp. 1–1196.