What is "megabazus"

Megabazus was a highly regarded Persian general under Darius. Most information about him comes from The Histories by Herodotus. Troops left behind in Europe after a failed attempt to fully conquer the Scythians were put under the command of Megabazus. The Persian troops subjugated gold-rich Thrace, the coastal Greek cities, and defeated the powerful Paeonians. Finally, Megabazus sent envoys to Amyntas I, demanding acceptation of Persian domination, which the Macedonian accepted. He then removed the Paeonians from their homeland and brought them to Darius in Sardis. Megabazus was suspicious of Histiaeus and advised Darius to bring him to Susa to keep a closer eye on him. His suspicions turned out to be true as Histiaeus provoked a revolt in the town he was formally in charge of and later sided with the Greeks against Persia. The successor to Megabazus's command was Otanes.