A female who was an ally, but is currently being corrupted by the Great Demon King's 'Demon Ma' magic. Her transformation is nearly complete.

She went to the Great Demon King to rescue Samjang, but while dazed by longing for her brother, she falls victim to the Great Demon King's 'Demon Ma' magic.

He corrupts people using Hanja magic like the 'Demon Ma' spell to make them his subordinates. He turns Samjang into the Dark Witch and Xiao into the Dark Queen. When he uses the brainwashing 'Demon Ma' magic, a dark red barrier forms around the target. Those affected become his subordinates, their eyes turn red, and demonic horns grow on their heads (except during body fusion). They follow his orders, and he intends to brainwash Guest by having their brainwashed friends attack them. Coveting Samjang's magical power, he plans to eliminate Guest and fuse with her body. During fusion, he erases Samjang's consciousness and uses the Hanja for 'Same Dong' and 'Become Hwa' to attach Samjang's back to his stomach, slowly becoming one. By using the Hanja for 'Complete Wan', the fusion is finished, and the Great Demon King successfully resurrects in Samjang's body.