Each Pokémon has its Hidden Ability, with the exception of Rotom, which only has Levitate as its ability. Each Pokémon caught before capturing Tornadus is at level 5 when transferred to Black 2 or White 2. Before capturing Thundurus, each Pokémon captured is at level 10.
The Pokémon Dream Radar is the first spin off game to be aware of a main series game within the Nintendo DS game card slot due to it being able to recognize the 4th generation DS cards inserted in the Nintendo 3DS' game slot during gameplay.
This is only possible with downloadable games, because the DS and 3DS game card slots are the same.
The Pokémon Dream Radar's release in each of four main markets is the same as Black 2 and White 2 in those respective markets.