what is a greevil.
Yes you can rematch greevil at anytime and he will still have his shadow Pokemon if you defeated them.
bi batteling different trainers
you can not find it in Pokemon dimond .you can only get it on all the Pokemon game boy advanced games
You can't.
you can foud ivsaur in Pokemon diamon in route 225 for your natinal pokedex
NO you cant
Yes.
you go to the Pokemon mansion in route 212 and go into the garden you will find a pikachu A pikachu was the second Pokemon i caught
in Pokemon xd salamace can be found as a shadow Pokemon in the last area of the game. this is where GREEVIL is
With PokéRadar
that means that your Pokemon like you
No it cannot.