Numbcargo

Yep, not there.

I'm trying to complete the pokedex(minus the legends ofc) but I can't find Natu. The only places it can be found from what I know is in the place where Arceus was fought, which is no longer accessible, and a one-time event in the Beryl ward where I seem to have killed it in the past. Is there any other way I can get it, or if not does someone have one they can give me?