Well, Mewtwo is a Clone of Mew so it is weaker, but Arceus is a bit better than Mew. So I guess Arceus is the strongest.
Mewtwo.
mewtwo
Mew and Mewtwo
charizard mewtwo or eevee
Well there is no strongest because every Pokemon has a weekness but a really good Pokemon is mewtwo and mew.
while you are going to become the strongest, but the Pokemon other than you is mewtwo
There is no overal strongest Pokemon in the game, but the strongest you will face will be Mewtwo.
deoxys,and mewtwo are the strongest Pokemon in "leaf green"
Probally Mew or Mewtwo
in curelen cave you get mewtwo
Either Arcues or Mewtwo.
Mewtwo, a Pokemon born for fighting, is the strongest in Yellow. It's Pyschic, legendary, and a man-made copy of Mew.