Envy, a homunculus forged from Father's extracted sin of envy, embodies his creator's resentment and jealousy. Their origin diverges across narratives: in the manga and 2009 anime, Envy coalesces from the absorbed souls of Xerxes’ citizens, their monstrous true form a writhing serpentine mass studded with distorted human faces and limbs. The 2003 anime reimagines them as the reincarnated child of Hohenheim and Dante, shaped by parental abandonment and existential fury. A master of deception, Envy morphs seamlessly into any person or creature within their mass limitations, wielding this power for espionage and manipulation. They orchestrate assassinations like Maes Hughes’ demise through impersonation of his wife and ignite the Ishvalan Civil War by framing a pacifist officer. Their favored guise—an androgynous adolescent with pale skin, violet eyes, and stylized attire—serves as a weapon of charm. Severe injury reduces them to a parasitic worm-like state, capable of controlling hosts via bites, though automail limbs resist this coercion. Openly sadistic, Envy revels in provoking suffering, boasting of engineering tragedies like Ishval’s destruction. Yet beneath this malice simmers a corrosive envy of human resilience and bonds, a void they cannot fill. This duality culminates in self-annihilation via Philosopher’s Stone destruction after Edward Elric strips bare their hidden jealousy, preferring death to humiliation. Relationships among homunculi oscillate between transactional alliances and contempt. Envy briefly mourns Lust’s death, exploits Gluttony’s obedience, and clashes with Greed’s defiance, while mocking Pride and Wrath’s authority. Physical insults trigger violent retribution, as seen in confrontations with Ling Yao. In battle, Envy combines regenerative immortality with shapeshifted weapon limbs, though their colossal true form sacrifices agility for brute strength—a flaw Roy Mustang exploits. Strategic overconfidence in disguises and a penchant for psychological games often undermine their tactics. Their arc closes with a bitter irony: the manipulator undone by longing for the very humanity they despised.