It would be easiest to help if I knew your version...
The best way is to use a exp. multiplier code and a lucky egg (doubles earned exp.)
There are also *easily* found codes that cause wild Pokemon to be lv. 100.
94000130 fcff0000 feff0000 aaaaaaaa d2000000
Because a level 100 Pokemon can no longer level up, it cannot learn new moves in that way. However, move tutors can teach a Pokemon new moves regardless of level, as can TMs and HMs. In Diamond, Pearl, and Platinum, there is also a man who will teach your Pokemon moves it could have learned at earlier levels in exchange for a Heart Scale.
wild Pokemon 100 94000130 fcff0000 d5fcba21 65fdecd d200000 0000000
well i think if you use it in battle it will go back to lv.100, cause i had Pokemon like that in blue version (huge glitch) but I've never seen it on diamond or pearl
If you receive it through Mystery Gift, it'll be level 100, but you can encounter it at level 70 in Snowpoint Temple in Pokemon Diamond and Pearl. In Pokemon Platinum, you can find it at level 1 in Snowpoint Temple.
ok i can give you a level 100 palkia and a level 87 dialga and a level 78 giratina
Train your pokemon.
Hold R before battle
level 100
The highest a pokemon could be is level 100.
ergfergfs
The only way to accomplish this is cheat you can either put in a catch trainer's pokemon code in and then with a level 100 in the party go to Trainer Tower each trainer will have level 100's you can capture for free. Also the wild pokemon modifier and level modifier put together will allow u to achieve your goals.
No, you cannot.
Please forgive the last person that posted. I'm afraid i din't know a Pokemon level 100 modifier but if you listen to the last guy that answered your not gana get anywhere. You can easily look on youtube or any website to find a lvl 100 mod. But only trust the code if it's long and if it says it has been tested.
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.
easy just cheat