Mrs Quark
He was Ed's dad's son, so. SOONNN.
about time someone notices the he is actually the homunculus of the first born son of Hohenheim of
Light's he was created because Dante and Hohenheim wanted to revive him. and thus they worked together to create the first philosophers stone." Dante and Hohenheim" use the philosiphers stone to try and bring back his first born son
the true form of envy can be seen here
http://fma.wikia.com/wiki/Envy?image=Envy-27s_true_form-jpg
no joke. this is actually what envy looks like powerless.
Envy's original human form is revealed in the penultimate episode of the 2003 series that he was created three hundred and eighty years ago by Hohenheim
Envy's true form as Hohenheim's son in the first anime. in an attempt to resurrect the son he and Dante conceived, who died from mercury poisoning when he was 18 years old. Envy held a great hatred towards him for never being acknowledged as his son and for abandoning him and Dante. As a result, he also hated his younger "half-brothers", Edward and Alphonse, as they obtained the fatherly love that he himself never received. When learning from Dante that Hohenheim was gone, Envy snapped at being denied from his wish to kill him. Dante, however, remarked that the Elric brothers are still alive and now have the Philosopher's Stone, as a consolation prize to curb his anger. The fact that they possessed the stone and would regain everything they lost made him more jealous of them and more intent on making them suffer as he had. However, Edward managed to see through his disguises and tricks until the Homunculus revealed his true form (an imitation of Hohenheim's deceased son with Dante) and his connection to Hohenheim. That stunt was all it took for him to successfully kill Edward, as the distraction gave him enough time to pierce him through the heart. He is then transported to the gate by Alphonse, meeting up with Edward again. Upon learning that Hohenheim was still alive on the other side of the Gate, he was able to successfully open and make his way through the doors. Once inside the Gate, the Gate Children attacked him, but he fought them off by transforming into Edward. Then, just before finishing his demand to see his father, he changed once again into his original human form. This is probably a way to get the Gate Children to take him to Hohenheim faster, which might explain the Edward transformation. By the time he made his way through to the other side, Envy became a serpentine dragon.