King Ghidorah was a three-headed extraterrestrial Titan first discovered encased in ice in 2016 before being awakened in 2019 by explosions caused by eco-terrorists.
Being an invasive species, Ghidorah had no interest in restoring balance. He preferred to annihilate Roblox's ecosystem, awakening all of the other Titans himself and bending them to his will. Assisted by Monarch, Godzilla and Mothra joined forces and engaged Ghidorah in Prometia City for a final confrontation. Ghidorah summoned Rodan to his aid to deal with Mothra, while Ghidorah overwhelmed Godzilla in one-on-one combat. After defeating Rodan, Mothra sacrificed her life to save Godzilla from Ghidorah, reinvigorating him with her energy and allowing him to finally destroy Ghidorah once and for all. With the three-headed terror finally vanquished, Godzilla took his place as the King of the Monsters, ending the rampages of the Titans previously under Ghidorah's control.
History
Ghidorah was once the only known Titan of alien origin until Spacegodzilla in 2027. The creature first came from space in ancient times, fighting Godzilla’s species and destroying civilizations, later making them ancient rivals. Monarch theorized that Ghidorah wiped out civilizations on Velkia. In 2019 in Bloxartica, Ghidorah was found frozen in ice by Monarch members. He was released from the ice by several explosions. Godzilla arrived and battled Ghidorah, who later escaped. After confronting a recently-awoken Rodan at Isla de Mara, Bloxico, Ghidorah was briefly confronted by Godzilla until the Robloxian military dropped a prototype of the Oxygen Destroyer, critically weakening Godzilla but left Ghidorah punfazed. Ghidorah flew up to Rodan's volcano and cried out a deafening Alpha Call that awoke many Titans across Roblox, commanding them to destroy cities across Roblox, which became the single greatest disaster in history. After the attacks suddenly stopped, Ghidorah and Rodan continued their rampages together. Ghidorah arrived in Prometia City, where he fought Godzilla one last time. After a long fight, Godzilla transformed into Burning Godzilla after Mothra's ashes rained down on him, unleashing three thermonuclear pulses to end his rival once and for all. Roblox was once again saved.