Originally Posted by Fat Naix
Jimera0, because Koga's room is forest-like, you may only use Pokemon who can be found in forests when fighting him. For example, in your current team, you won't be able to use Quilava/Typhlosion, Quagsire, or Umbreon.
Alright, that works! So now I need just one more one time challenge and 1 whole game challenge. Again, details are here