Arakha (=Nebuchadnezzar Iv) in Wikipedia

Nebuchadnezzar IV, also known as Arakha, was the last king of Babylon. In 529 BC, with the disturbances that occurred after the death of Cambyses II and the proclamation of Bardiya as King, the Armenians revolted. Darius I of Persia sent an Armenian named Dâdarši to suffocate the revolt, later substituting him for the Persian Vaumisa who defeated the Armenians on May 20, 521 BC. Around the same time, another Armenian named Arakha ('Arakha' meaning 'crown prince' in Armenian), son of Haldita, claimed to be the son of the previous king of Babylon, Nabonidus, and renamed himself Nebuchadnezzar IV. His rebellion was short-lived and was suppressed by Intaphrenes, Darius's bow carrier.