Talk:Gamma Dragon/@comment-16719445-20131129115106/@comment-5835936-20131207172845

It's Light/Lightning, and it's green because it is supposed to look like the Hulk, as Bruce Banner gained the ability to transform into the Hulk after (though the specifics vary depending on the version) some kind of experiment involving gamma rays. As the notes explain, the description is full of references comfirming this.