Last time I saw it, it was on Cartoon Network, and that was when they were repeating the Battle Frontier episodes, since I do remeraber it airing on a weekday, so my memory is fuzzy. I know BF saga is on DVD, but I am saving my money for something else right now. But
Hence the doppelganger, after all a doppelganger is mostly a ghostly double or a counterpart of a person, since it did have a black aura around it, it could be a ghostly double.