Rabmag in the Bible

All the captains of the king of Babylon came in and took their places in the middle doorway of the town, Nergal-shar-ezer, ruler of Sin-magir, the Rabmag, and Nebushazban, the Rab-saris, and all the captains of the king of Babylon.

So Nebuzaradan, the captain of the armed men, sent Nebushazban, the Rab-saris, and Nergal-shar-ezer, the Rabmag, and all the chief captains of the king of Babylon,