Who is…
Merodach

Hebrew: מְרֹדָךְ —transliteration: Merodak —meaning: death; slaughter

also known as: Merodak and Marduk

This is the name of the prime Babylonian false god. In the city of Babylon, Marduk was worshipped in the temple Esagila. Marduk is associated with the divine weapon Imhullu. By the Hammurabi period, Marduk had become astrologically associated with the planet Jupiter. During the reign of Nebuchadnezzar I, the statue of Marduk, formerly captured by Elamites, was restored to Babylon.

“Declare ye among the nations, and publish, and set up a standard; publish, and conceal not: say, Babylon is taken, Bel is confounded, Merodach is broken in pieces; her idols are confounded, her images are broken in pieces.” —Jeremiah 50:2 KJV

Compare:

“Declare and proclaim among the nations.
Proclaim it and lift up a flag,
Do not conceal it.
Say, ‘Babylon has been captured,
Bel has been put to shame, Marduk has been shattered;
Her idols have been put to shame, her images have been shattered.’ ——Jeremiah 50:2 NASB

This name frequently occurs as a surname to the kings of Assyria and Babylon, including Evil-merodach king of Babylon and Merodach-baladan (Merodachbaladan) son of Baladan (king of Babylon).