Mary, a mummified priestess, is one of three undead guardians who raised a human child within the City of the Dead. Once a devout follower of Mater, the earth-mother goddess, she forged a pact with Stagnate, god of undeath, to prolong her existence and that of her companions, Blood and Gus. The pact bound them to safeguard the seal containing the Demon High King—a duty they failed to fulfill while alive. Each day, her prayers to Mater ignite her body in purifying flames, a divine retribution for her broken vows, yet she endures the torment without faltering. To her adopted child, she imparted practical skills and spiritual wisdom, cultivating kindness, humility, and care for others. Lessons spanned tending gardens, baking sacred bread through communion rites, and nurturing empathy toward every living creature. Though Stagnate’s pact granted undeath, it demanded their souls should they ever place anything above guarding the seal. This oath clashed violently when their child defied Stagnate’s echo to shield them, compelling Mary to confront the consequences of her pact. Guilt over forsaking Mater’s path and jeopardizing her family tinged her maternal warmth with silent sorrow, shaping every interaction. Her teachings became the cornerstone of her child’s ethics, championing compassion above vengeance. Long after the Stagnate conflict subsided, her legacy endured, steering her child’s deeds—from healing blighted realms to brokering peace between warring factions.