From the Marriland Wiki, a database for the Pokémon series that anyone can contribute to
| Lostlorn Forest|
迷いの森 Lost Forest
| Information about Lostlorn Forest
| Connecting locations:
|| ↓South -Route 16
| Needed HM:
Lostlorn Forest (Japanese:迷いの森 Lost Forest) is a location in the Unova region. At the end of the forest you'll see a trailer with a girl in it. When you talk to her she says nothing. When you bring one of the Crown Beasts (Shiny Raikou, Entei or Suicune) to Lostlorn Forest using the Transfer Machine, the girl gets out of the trailer and lets out a cry and reveals that she is a female Zoroark, it is at Level 25 and it transforms into another Crown Beast that you didn't transfer: if you send a shiny Raikou, you'll see a normal Entei, if you send a shiny Entei, you'll see a normal Suicune, and if you send a shiny Suicune, you'll see a normal Raikou. There is no other way to get Zoroark, other than going to Gamestop during the shiny trio of Johto event, or by evolving Zorua from the Celebii event, which was also a Gamestop event.