Correct me if I'm mistaken.
Think of a Pokémon.
That Pokémon is now in control of the world.
How did it fare?
Mewtwo killed us all.
Whoops. My bad.
Minccino made the entire world clean and dust-free.
There are no more deserts on Earth.
The world is now plagued by horrible nightmares. Maybe I shouldn't have been looking at your profile pic while picking one...
Goddammit Groudon, there's already enough sun in this world!!
Now we will see another hippie revolution.
Lickilicky makes the entire world slobbery.
Exploud deafens everyone.
Blissey increases people's lifespans drastically.
Arceus... keeps the world the same.
Meloetta gives everyone singing and dancing lessons.
Darkrai just trys to act like freddy cruger