A while ago I uploaded Jolteon, Flareon, and Vaporeon. The Legality Analysis says that their PID is hacked and they have no encounter. I got them as an Eevee from Bill in Goldenrod City in HeartGold and SoulSilver. You can tell that they aren't cloned from one Eevee because they all have different PIDs, Natures, and Base Stats.
Jolteon
http://www.pokecheck.org/?pk=2934958
Flareon
http://www.pokecheck.org/?pk=2934944
Vaporeon
http://www.pokecheck.org/?pk=2934942