Do you still have Yggdra Union for the GBA? Don’t pawn it on eBay just yet. Sting has a special surprise for people who own Yggdra Union and Knights in the Nightmare. If you have Yggdra Union plugged into your GBA slot while playing Knights in the Nightmare you can unlock the mysterious which Pamela. She’s a high level priestess in Sting’s DS game and the reason the GBA/DS Knights in the Nightmare Dept. Heaven Episodes series combo pack makes sense for fans.
I always thought special GBA unlocks were neat since they aren’t common. Since the DSi doesn’t have a GBA slot and the GBA has been dead to publishers for years, these types of special bonuses are a thing of the past.