What happens if you trade a ??? type Arceus to Black or White/their sequels?

[CM30]

Apparently it does have such a form to prevent the game crashing if it's hacked/modified to be that type, but the ??? type doesn't even exist in Black and White due to the move Curse being changed a Ghost type move.

What happens if you try and transfer such a Pokemon to gen 5? Does the game lock up? Refuse to accept it in Poke Transfer or whatever?

 

[pie595]

Most likely an error trap will catch the ??? type and change it to ghost or won't let you do the trade.

 

[SpoonySage]

Apparently it does have such a form to prevent the game crashing if it's hacked/modified to be that type, but the ??? type doesn't even exist in Black and White due to the move Curse being changed a Ghost type move.

What happens if you try and transfer such a Pokemon to gen 5? Does the game lock up? Refuse to accept it in Poke Transfer or whatever?

All items are removed when trading up to 5th gen. So it is impossible to trade a ??? Arceus, even though it would have to be hacked to even be that type to begin with.

 

[Gelivable]

it becomes normal type?

 

[Lubban747]

Arceus's default type is normal, since poketransfer does not allow items it should be normal when transferred. Besides, the plates used to change its type are obtainable both in Black & White as well as Black2 & White2