Tiamat, also dubbed Titanus Tiamat, is a giant serpentine Titan who first appears as a major antagonist in the graphic novel Godzilla Dominion, a minor antagonist of the 2024 film Godzilla x Kong: The New Empire and an additional supporting antagonist in the 2024 video game Kong: Survivor Instinct.

Tiamat was one of several off-screen Titans whose names were displayed on maps in Godzilla: King of the Monsters, with Tiamat slumbering underneath Stone Mountain in Georgia before being woken up by King Ghidorah.

This kaiju is named "Tiamat" after a Babylonian salt sea goddess with the same name, who gave birth to several gods that later killed her and used her carcass to create the Earth.

Monarch classifies Tiamat as Titanus Tiamat.

[2][3]