There are many contenders for the role as 'The Most Powerful Pokemon'
Many People believe that it could be Mewtwo or Mew.
Others believe that it could be Lugia, Deoxys, Rayquaza, Arceus or Darkrai e.t.c
But it only matters how you train your Pokemon and what strategies and moves it knows, Some believe that Arceus could be the strongest because of it's special ability and the fact that it created the Pokemon World.
The answer would probably be Mewtwo because in the movie it says it was supposed to be created as the Ultimate Pokemon.
Here is a list of what people think:
Sporefan says: The most powerful Pokemon is Arceus by far. He created worlds and life.
DarkLancer99 says: The most powerful Pokemon could be Uxie because when it opens its eyes, the people that it looks at will lose their memory and common sense completely. This would mean that with its Psychic abilities it would be able to rewrite peoples/pokemons memories and knowledge.
cyrus9898 says: The most powerful Pokemon is definitely Arceus because he created the Pokemon world and rules over everything
The most powerful water type is Suicune.
mewtwo
Yes Ditto is the most powerful unstoppable at lvl 90-100
im sure it giratina
Psystrike
Arceus
Caterpie
Arceus is the most powerful, with a base stat total of 720, the current highest. sds ooo
The most powerful water type is Suicune.
The strongest (most powerful) Pokemon is of course rayquaza.
Kyogre.
dragonite
Arceus
Mew
mewtwo
NO. Only ash got that as a choice. You have to catch it in the viridian forest, but it's rare
Yes Ditto is the most powerful unstoppable at lvl 90-100