“A homunculus who hates humans because it envies them — and the thing it feared most was someone feeling sorry for it.”
Can perfectly transform into any human or creature. The assassination of Maes Hughes — disguised as his wife — is the most notorious example.
Transforms into a massive multi-headed serpentine beast with overwhelming destructive force — but its true essence is a tiny parasite.
Homunculus regeneration powered by the Philosopher's Stone. Recovers from nearly every injury.
All cynicism and cruelty on the surface, but at its core is a profound inferiority complex toward the humans it mocks. Its name is its entire identity: Envy. It sneers at human bonds, feelings, and hope — while desperately wanting all of those things. The fact that Edward's pity breaks it tells you everything about what Envy really is.