Zhuge Liang (Lord El-Melloi II) exists as a Pseudo-Servant within the Fate universe, a fusion binding the spirit of the ancient Chinese strategist Zhuge Liang to the physical vessel of the modern magus Waver Velvet, holder of the title Lord El-Melloi II. This unique manifestation arose during the extraordinary conditions of the Grand Orders, enabling Zhuge Liang's spirit to merge seamlessly with Waver Velvet's body. While Zhuge Liang retains his formidable abilities and knowledge, he deliberately permits Waver's personality to dominate their shared existence, recognizing Waver's superior familiarity with the modern era. Consequently, the character primarily exhibits Waver's rational, sometimes moody disposition, with Zhuge Liang's presence described as a detached "monster of rationalism" who rarely engages directly. Physically, the character initially mirrors the adult Lord El-Melloi II but progressively reverts to Waver Velvet's younger form (approximately 19 years old) across ascension stages. This visual reversion connects symbolically to Waver's formative experiences without diminishing the Servant's power. Zhuge Liang's strategic mastery endures, manifesting in skills like "Discerning Eye" for gauging human potential, "Advice of the Strategist" for delivering flawless tactical guidance, and "Command of the Strategist" for maximizing allied combat efficiency. His Noble Phantasm, "Unreturning Formation" (Shí Bīng Bā Zhèn), materializes as a labyrinthine field that ensnares and steadily weakens foes. The character's relationships reflect both Waver's history and Zhuge Liang's legacy. He maintains complex ties with figures such as Iskandar (whom he respects yet regards with melancholy) and Sima Yi (whose presence, channeled through Reines El-Melloi Archisorte, visibly unsettles him). He also displays protective mentorship towards his apprentices, especially Gray, guiding her while navigating her connection to Artoria Pendragon. In lighter contexts, like the parody series *Fate/Grand Carnival*, this dynamic extends into comedic situations—such as Reines riding on his shoulders during a chaotic cavalry battle—highlighting his long-suffering yet dutiful nature amid absurdity. His narrative roles span multiple media: In the *Grand Orders*, he serves as strategist during events like the Second Singularity (Septem), supporting Alexander with tactical deployments. Within the *Fate/Accel Zero Order* event, he provides critical insights into anomalies plaguing Fuyuki's Holy Grail War. In *Fate/Grand Carnival*, his serious persona contrasts sharply against exaggerated scenarios like the Servant Olympics, where his participation underscores the series' farcical tone without altering his core traits. Across all appearances, his character remains defined by intellectual rigor, pragmatic leadership, and an undercurrent of vulnerability stemming from Waver's insecurities about his own power.