Watched up to episode 20 of Fullmetal Alchemist, and decided to do some basic deduction.
So far, 3 Homunculi have appeared, Lust, Envy, and Gluttony. Extrapolating from this, there are 4 more Homunculi, named Greed, Sloth, Wrath, and Pride, that have yet to be seen. Due to their name, I can assume that these seven are Artificial Humans, presumably created with the aid of a Philosopher's Stone. If I would hazard a guess, I would assume they are bought about by a failed human transmutation (such as that of Trisha Elric) coming into contact with a Philosopher's Stone, as a failed transmutation would still hold the genetic material of the deceased.
Whee, guesswork.
edited 27th Sep '11 10:00:36 AM by Saigyouji
Oddly enough, Shadow Of Destiny has a Homunculus produced by the Philosopher's Stone. It's interesting, because that isn't always recorded as a method, rather than just Artificial Humans created through alchemy.
No...but it's tough trying...
edited 27th Sep '11 10:18:43 AM by Frankiefoster
I'M GOING TO GET OUT OF THE U.S, WITH OR WITHOUT YOU!!!@Spooky theres a phrase that simply states: "Those who can do, those who can't teach"
Apocalypse: Dirge Of Swans.Yes. I'm just great.
edited 27th Sep '11 10:22:10 AM by Frankiefoster
I'M GOING TO GET OUT OF THE U.S, WITH OR WITHOUT YOU!!!

-pats everyone's head-
Hello again tropers