no you cant
No, you cannot.
Theres actually no way they only programmed the game for up to lvl 100 and that's it
You can not bypass leveling up Pokemon at level 100. There are some codes that sound like they can bypass codes, but they are just to do that to trick you into corrupting your game system, or it just doesn't work. There is only some cheats that you can bypass level 100, but its sort of stupid just to level up Pokemon after 100, because you'll just be leveling up till level 100,000,000... Pyrenix is out. P.S. Vwithrow on my watchlist said, "Then wat is it!?!?!?!?!?!!?". Well, technically, I don't know the answer. Either go on some website that contains Action Replay codes or just forget about it.
the highest level in both diamond and pearl is level 100
At level 100
NO YOU CAN'T IT'S THE HIGHEST LEVEL IN THE GAME..VERONICA
Train your pokemon.
The highest a pokemon could be is level 100.
level 100
There exists no trick to get a Level 100 Regigigas in Pokemon Diamond, except by manually levelling up the one found in Snowpoint Temple.
beat him with a level 100
any level up to 100