arceus because if you have plates you can change its type
there is no toughest it all depends the stats of Pokemon and if you have a type advantige.
Mt. Silver. It has the highest level wild Pokemon and has the trainer red whom has Pokemon level 80 - 88. After that the next toughest area is the Pokemon league
it is a lv 100 but it is the Pokemon weakness that makes a Pokemon strong.
Maxwell Towles
Get away or i will cut your heads off! Shoo!
It is Vito Winstrate.
You can't really go further then that. The pokemon league contains the toughest trainers in pokemon platinum.
Probably Mewtwo. In the movie, he kills people, and he lives in a cave filled with the toughest Pokemon.
The nest Pokemon is Mew, although its been modified into Mewtwo by a villan team.
the legendary pokemon Zekrom because he is the toughest and everything
pika-Jew leader of team Jew
In a Pokemon battle, you should start with the weak Pokemon to weaken the foe for the your toughest.