I'm interested in being Ao Kuang, from Chinese Mythology then.

Name: Ao Kuang
Height: 400 feet 
Gender: Male
Appearance: A giant, blue colored Chinese dragon, he is bearded and possesses green eyes.
Side: good
Powers: He has the power to command wind and storms, and breaths forth microbursts of razor wind. He's also unusually intelligent for a Kaiju, and has the power to fly very at very quick speeds.
Weakness: Extreme heat
History: 
Ao Kuang was worshiped hundreds of years ago as a Shen (Chinese god). He was said to be a tyrannical ruler who was defeated by both Nezha and Sun Wukong. It isn't known if the mythology has any truth in it, but Ao Kuang is currently working with the other good Kaiju to defend against Extra-Terrestrials.