Narcisse, approximately 26 years old with blonde hair and blue eyes, is a former royal advisor to the Kingdom of Pars. He abandoned his position following a falling out with King Andragoras, choosing instead to pursue a career as a painter despite lacking notable talent. After Pars's betrayal and defeat by the Lusitanian army, Prince Arslan recruited him, promising the position of royal artist upon reclaiming the throne. Serving as a primary strategist within Arslan's group, Narcisse contributes significant intellectual prowess to military and tactical planning. His personality is marked by bluntness, frequent sarcasm, and occasional indulgence in drinking, traits that often create friction with the duty-focused Daryun. Despite these conflicts, Narcisse demonstrates unwavering loyalty to Arslan's cause.

He acts as caregiver for Eram, a 14-year-old ward whose mother was likely a slave, treating him as an equal since the mother's death. Narcisse later extends protection to Arfreed, a 16-year-old survivor of the Zott clan, after saving her during a confrontation. Both Eram and Arfreed reside with him, forming a familial unit. In combat, Narcisse possesses competent physical capabilities, though his speed and strength are comparatively lower than Daryun's, relying primarily on his strategic acumen. His continued identity as a painter occasionally surfaces despite his strategic role.