Tiamat is a serpentine Titan first mentioned in the 2019 MonsterVerse film Godzilla: King of the Monsters on a Monarch map. Her design was revealed in the 2021 graphic novel Godzilla Dominion. Once dormant underneath Stone Mountain in the U.S. state of Georgia, Tiamat was awakened by King Ghidorah's call and began to attack humanity. She was pacified when Madison Russell activated the Orca in Boston. Some time later, Tiamat was residing near one of Godzilla's old lairs in the Hollow Earth, and a
