Nothing now it's the strongest it can be.
train... train...TRAIN...
train it to be lvl 100
Answer to fire red Pokemon gameCATCH 100 DIFFERENT KINDS OF POKEMON
Level 100 legitly.
just train
Train it
fight stuff
Train it
You cant. you have to train.
Train it
you train them
You can't find level 100 Pokemon you have to train a Pokemon to that level yourself.