[1] Red Boy (紅孩兒) is the ferocious son of the Bull Demon King and Princess Iron Fan (a Rakshasa).
Upon hearing about Tang Sanzang's arrival at his mountain, he attempted to capture the monk so he and his father could eat the latter's flesh and extend their lifespans.
[2] Although a young child, he is fiercely independent and assigned to a land away from his parents, even reigning over lesser demons and local deities with his mighty power.
Enraged that Wukong tried to kill him, Red Boy conjures a powerful whirlwind around him and kidnaps Tang Sanzang in the chaos.
He prepared to cook Tang Sanzang but was alerted by the lesser demons that Sun Wukong and Zhu Bajie were demanding his master back outside the cave.
When Zhu Bajie joined the fight, Red Boy stood in the middle one of the five carts and punched himself twice in the nose.
Caught directly by the flames, Sun Wukong is ultimately almost burned to death, and he finally resorts to asking for the help of the Guanyin.
He transformed into her shape and form and tricked Bajie into following him back to his cave, where the lesser demons captured him into Red Boy's As-you-will leather bag and hung him up the rafters.
That's when he learned that Red Boy sent out his six little devils who are his warriors (Mist-in-the-Clouds, Clouds-in-the-Mist, Firefast, Windspeed, Hurley-Burley, and Burley-Hurley) to invite his father, the Bull Demon King, to the cave and share Tang Sanzang as a meal.
He used his hairs to change them into dogs, bows, crossbows, and falcons so that it may look like he was coincidentally nearby through a hunting party when the six warriors met him.
[11] The six warriors lead him back to Red Boy, who is elated but suspicious when his "father" rejects to eating Tang Sanzang.
When Wukong feigned forgetfulness, Red Boy signalled all demons to attack, claiming that his father "is always reeling off the details of his birth-time.
They appeared in the highest heavens and watched Red Boy find Guanyin's (empty) lotus throne.
Wukong tried to protect her, but she threw a golden band that multiplied into five and fixed around Red Boy's head, wrists and legs (which were similar to the magical band around Wukong's head, in that it also tightened after Guanyin recited the mantra "oṃ maṇipadme hūṃ", causing pain to Red Boy), thereby subduing him.
After being jibed by Wukong, took his spear again and attempted to attack him, only to have Guanyin recite yet another mantra, which made Red Boy put his hands together in front of his chest, unable to pull them apart; Red Boy, now with his arms immobilized, could do nothing other than lower his head in a bow of defeat.