Im pretty certain Arceus is real
Its discription, OT, Pokeball and Ribbons all are from a Nintendo Event
Im not certain but pretty sure they cant be hacked
It can be hacked. Any pokemon can be hacked.
I borrowed someones Arceus to do the event.
But ill go try with this one, if im lucky it will let me do it again
If it does, then its definatly real.
Dont like my chances though
If you have already completed the event on one save, you cannot do it again on the same save except with a Hall of Origins Arceus.
Also, hacked Arceus can activate the event as well.