Dagon was a member of the Titanus Gojira species. He was ultimately slain by MUTO Prime to spawn the two MUTOs that would born in 2014.
In ancient times, a Phoenician fleet arrives in Japan and are greeted by the locals. The two peoples watch as Dagon rises from the ocean to fight MUTO Prime, though he is quickly beaten to the brink of death by the giant parasite. Using her ovipositors, MUTO Prime injected two eggs into Dagon's stomach lining and burrows underground. Dagon recovers and retreats back into the ocean, though his fate had already been sealed. The eggs go on to feed off of Dagon's nuclear rich blood, steadily draining him of his nuclear energy before ultimately killing him. Dagon collapses in a cavern in The Philippines, where his remains fossilized until being discovered in 2014 during a seismic survey.