Wan Chen, also known as Wang Zhixuan, is a Chinese man in his mid-thirties. He possesses distinctive dark blue hair, typically secured in a bun, and striking blue eyes. A prominent scar crosses his nose, a permanent mark from a traumatic childhood event in China where rival clans slaughtered his family, leaving him the sole survivor. His attire usually consists of a white overcoat featuring a red stripe and fastened with a single black button, paired with black pants and shoes secured by white laces.

He holds the rank of Second among the Adepts, codenamed "Ground Zero." His elemental affiliation is silicon, granting him the ability to manipulate silicon-based materials, shaping them into weapons like swords and shields or various pieces of equipment during combat. Wan Chen demonstrates exceptional swordsmanship, capable of challenging skilled fighters such as Elizabeth, and possesses a strategic intellect that enabled his covert infiltration of the Roman Curia Surei Academy.

While initially presenting as calm and concerned for his allies, his true nature involves manipulating and exploiting others without remorse. He abuses subordinates and leverages his position as a teacher to seduce and mistreat young girls. Fueled by the backstory of his familial loss, he embodies ruthless pragmatism; he prioritizes his goals over loyalty, readily betraying comrades when advantageous. The scar serves as a constant reminder of his past, reinforcing his detached and calculating approach to interpersonal relationships.