In "Journey to the West", Red Boy was adopted by Guanyin Bodhisattva as a good boy.
Red Boy's original name is Niu Shengying, nicknamed the Holy Infant King. He is the son of the Bull Demon King and the Iron Fan Princess. He has practiced in the Flame Mountain for three hundred years and refined the magic "Samadhi True Fire", which is very impressive. Red Boy heard that eating Tang Monk's meat could lead to immortality, so he wanted to capture Tang Monk to eat his meat. In the end, he was taken in by Guanshiyin Bodhisattva and became a good-wealth boy by his side.
Original description
There was a group of little demons in charge of weapons. Two of them carried out a fire-tipped spear eight feet long and handed it to the demon king. The Demon King walked out of the door with his gun and no armor, just a brocade war skirt tied around his waist and barefoot. Monkey and Bajie looked up and saw the monster——
Its face was as white as powder, and its lips were as white as red.
The temples are covered with green clouds and the indigo is dyed, and the eyebrows are divided into crescent moons like a knife.
The war skirt is skillfully embroidered with dragons and phoenixes, and its shape is richer than Nezha.
The swords in both hands are majestic, and the auspicious light comes out to protect the body.
The sound is as loud as spring thunder, and the eyes are as bright as lightning.
If you want to know this devil’s true surname, he will be famous throughout the ages and call the red boy.