beat the ealeat 4 100 times or fite Pokemon were you catch dialga 10000 times both are hard never use cheats or your game will crash
easy just cheat
you can give them a lot of rare candies
Train your pokemon.
level 100
The highest a pokemon could be is level 100.
ergfergfs
No, you cannot.
any level up to 100
There is no such code for that. The game can only allow you to have Pokemon up to level 100. No Pokemon over level 100 exists.
You can't, even with hacking.
No Pokemon can reach a higher level of 100 in Pokemon diamond or pearl even if you use action replay, i don't think you can get it sorry :( nintendochick knows all!
beat him with a level 100