Welcome to PokéCommunity! Register now and join one of the best fan communities on the 'net to talk Pokémon and more! We are not affiliated with The Pokémon Company or Nintendo.
The roaming beasts in gen2 had their stats determined after being released. In HG/SS both IV and nature were set after releasing them. If these issues haven't been addressed, then i would guess they work the same way in Polished Crystal.
I catched more than 20 mon total with Natu in the...
I don't know if the beasts have preset DV's and natures, as in the original games, but if they do, a change would be most welcome, since i want useful beasts.
But it resets after catching a mon and restarting the game. Which makes going on catching sprees, and trying for that perfect legendary feel ever so slightly more tedious.