Yeonmi Heap is a complex and morally ambiguous character. She is a young goblin woman who is deeply involved in the astral realm.  

Yeonmi is portrayed as intelligent and ambitious, but also as manipulative and deceptive. She is fiercely loyal to her own goals, but she is willing to use others to achieve them.  

Yeonmi’s past is hinted at throughout the story. She reveals that she has a history with Milas Meddle, having served as his spy in previous lifetimes. She is knowledgeable about the astral realm and the workings of the bombshell boon.  

Yeonmi’s motivations are complex. She appears to be allied with Sorcerer Swallow, but she also has ties to Milas Meddle and her own ambitions. She is a skilled manipulator and a formidable opponent.  

Yeonmi’s fate is sealed in the labyrinth. She is killed by Heidi after attempting to betray Angie and steal the bombshell boon for herself. Her death highlights the dangers of the astral realm and the complex web of alliances and betrayals that characterize the conflict between good and evil.