I think that this is mostly a matter of opinion. I personally think Mew is a much stronger Pokemon because it can learn pretty much every move. The answer to your question also depends on what stat of the Pokemon you are looking at.
Daniel Mejiea has the strongest Pokemon in the world which is pikuchu 506 hp
Well Arkeus is an event Pokemon so the man at the pokemart will give you a somthing flute. then go to the sphear pillar (where you encounter Dialga or Palkia( depending if you have diamond or pearl)) take 1 step in then it will ask you if you want to blow into it click yes wait a few seconds and stairs will apear walk up the stairs and you will find Arkeus!
Sorry mate or if you are a women mam but anyway you cant get an aceus in souls silver or heart gold
arceus
arcues
arceusKyogre is the strongest water type Pokémon.
not realy
deoxys,and mewtwo are the strongest Pokemon in "leaf green"
The strongest pokemon would have to be a rattatata or starly holding a focus sash that knows endevor and quick attack.
The strongest Pokemon in the world is mewto level x
Jeremiah Pelaez
No, but I like Lugia. Arceus is the strongest. Please give me trust points.