What's this called?

Lei Zhenzi, one of the mythical figures in the novel Romance of the Gods in the Ming Dynasty, is a lightning bolt that brings the stars to the afterlife.

His image was originally a normal person, but later he ate two immortals of Master Yunzhongzi by mistake. His face is like indigo, his hair is like vermilion, his eyes are violent, his fangs come out of his lips, and his mouth is very long. He is two feet long, his whole body is moist, and a pair of "wings of wind and thunder" are born under his back ribs. Armed with a golden cudgel, he has infinite strength and extremely high martial arts. When spreading his wings, he is thunderous and extremely fast, and he can travel to Wan Li every day.