Seems this scientist got exposed to some radiation that then, whenever he got angry, caused him to turn into a green, hulking monster who pretty much wretched everything and everyone around him. I think there is an Incredible Hulk inside all of us, lurking, waiting to come out.
Anger is ugly.
It can lead to monstrous things, like one father beating another to death at a kids hockey game recently, or road rage, or domestic abuse, or school shootings, or even in the sacred halls of the church. The Incredible Hulk can be found most anywhere. I have met him many times in others and in myself. Emotions do so easily take over and get us out of control. I have seen normal people do things, say things when they were angry that they never would have otherwise.