Rodan (Godzilla: New Age of Monsters)

Rodan is a giant irradiated prehistoric pteranodon Kaiju from Godzilla: New Age of Monsters.

Origin
Rodan is a giant pteranodon that resurfaced after millions of years and that nuclear bomb testing was the cause of why Rodan has appeared

The incident in 1956
Back in 1956, two Rodans emerged from the ground near Mt. Aso and began to cause terror in Fukuoka, destroying buildings and cars as the J.S.D.F. had plan to trap the creatures in their nest when a volcano was erupting. Both Rodans try to escape. Unfortunely, they died in the process. The event was known as "The Rodan Incident". However, at the end of The Space Monster Returns, a baby Rodan was seen hatched from it's egg in a cavern near Mt. Aso as the infant flying dinosaur made its first cry.

Rodan lives
Rodan resurfaced from Aso crater and flies off to come face to face with Godzila as both monsters join forces to defeat Gigamoth.