Bel-Ibni in Wikipedia
Bel-ibni was a Babylonian nobleman who served as King of Babylon for several years as the nominee of the Assyrian king Sennacherib.
Sennacherib, believing that direct Assyrian rule was too costly, appointed Bel-ibni, a young Babylonian nobleman raised at the Assyrian court, King of Babylon in 703 BC.
The experiment with a native puppet king was hardly more successful than direct Assyrian control. Soon Bel-ibni was conspiring with the Chaldeans and Elamites against the Assyrians. After defeating the opposing coalition in 700 BC, Sennacherib deposed Bel-ibni and carried him off to Assyrian exile, replacing him with Sennacherib's own son, Ashur-nadin-shumi.
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