I think envy is a boy. Lust does make a comment on his outfit in one of the two versions (can't remember which) I don't see breasts, the voice and the "envy" over Hohenheim and Ed in the 1st series "'cause he felt he was the 1st son and should get all Hohenheims affection!
An Invisible Shapeshifter
Now that there actually is a FMA subforum, I can repost my thread in the anime forum here.
THE AGES OLD DEBATE:
What is Envy's gender?
I believe that from the previous thread, a bunch of people thought Envy was genderless cause Envy was a homunculus.....
But each of the homunculi took on some form of gender....
And I still can't tell. Does Envy have breasts or not?
(By gender I mean biological sex. But feel free to discuss whatever Envy's gender is as well
Envy being a homunculi, - affects both genders equally. Are the genders of the homunculi whatever gender is more "affected" or probably just what the artist portrayed them as, or going by mythology?)
By mythology, what is Envy usually?