Hong Hai Er, also known as the Red Child, is a fiery demon with powerful abilities in the anime series 'Tian Guan Ci Fu' (Heaven Official's Blessing). As a mischievous and spirited character, he is known for his fiery temper and formidable skills in combat. Despite his intimidating presence, Hong Hai Er often displays a childlike curiosity and innocence, which endears him to other characters. His role in the series involves navigating the complex relationships between gods, ghosts, and demons, and he often serves as a catalyst for key plot developments with his unpredictable actions.