Hun-Kamé is the Lord of Xibalba, the kingdom of the Underworld, and serves as the fairy-tale archetypal handsome prince in *Gods of Jade and Shadow*. His character is marked by arrogance due to his power and immortality, but his relationship with Casiopea transforms him, giving him a perspective on humanity and love. He does not fit the traditional prince role as he is freed by Casiopea and must work with her to achieve their goals.

Vucub-Kamé is the antagonist of *Gods of Jade and Shadow*, characterized as a selfish creature with a tendency for vengeance. He entraps his brother Hun-Kamé, setting the story's main conflict. As Hun-Kamé’s narrative double, Vucub-Kamé represents resistance to change and holds onto old, brutal traditions. His character explores themes of power and survival.

Martín Leyva is Casiopea’s cousin and an antagonist in *Gods of Jade and Shadow*. He embodies the patriarchal system and wields power over Casiopea due to societal norms rather than personal merit. His journey illustrates the dismantling of perceived power as he confronts his lack of authentic strength and courage.

Loray is a demon featured in *Gods of Jade and Shadow*, residing in Mérida with a guise of a polished upper-class individual. He represents self-interest, showing willingness to switch allegiances based on outcomes. Loray’s ambiguous morality contrasts with Casiopea’s strong ethical stance.

Xtabay is a figure from Mayan mythology present in *Gods of Jade and Shadow*. She is a demon who leaves her forest home at Vucub-Kamé’s request, guarding one of Hun-Kamé’s pieces. Her selective memory highlights themes of identity and transformation, focusing on the aspects of herself she chooses to retain.

Cirilo Leyva, Casiopea’s grandfather, serves as a secondary antagonist in *Gods of Jade and Shadow*. Described as cruel and oppressive, his actions are driven by a sense of inadequacy. He collaborates with Vucub-Kamé in hopes of securing a better life for himself, highlighting themes of desperation and ambition.

Aníbal Zavala is a sorcerer aiding Vucub-Kamé in *Gods of Jade and Shadow*. His character symbolizes loyalty and the spread of false information. Enthralled by Vucub-Kamé’s power, Zavala supports actions that could have detrimental effects, illustrating how allegiance can blind one to consequences.

In *Gods of Jade and Shadow*, Casiopea’s father and mother symbolize opposing influences on her identity. Her father, who died before the story begins, is romanticized by Casiopea as a symbol of defiance, while her mother represents the oppressive circumstances Casiopea aims to escape from. These influences shape her journey toward freedom.