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.
Level 100
A Pokemon cannot go more than level 100 You cannot train a Pokemon past level 100, however, you can catch one over level 100. To do this you need to do the missingno glitch, and just sail until you see a ridiculously high level Pokemon. It will not be easy to catch this Pokemon seeing as it can be 2, maybe even 3 times stronger than your strongest Pokemon.
Well you can't catch level 100 wild Pokemon in emerald, so get up and start training if you want a level 100
There is no place where you can catch a level 100 pokemon unless you use some cheat device. (Such as an action replay)
Level 100 Pokemon do not naturally appear in the wild in Pokemon, so you cannot catch them without cheating.
You cant, you need to catch a Pokemon above level 100. all you need to do is get an rare candy [you need a slow computer.] and use it on any Pokemon , then click use loads of times until you get the right level.
you have to battle against other Pokemon that are level 100
You can't catch Level 100 Pokemon in any Pokemon game. The highest catching Level in Pokemon is Level 80. You need to raise your Pokemon to Level 100 or trade for a Level 100 Pokemon to get one. You can also challenge Level 100 Pokemon, but only in the organized challenges of the Pokemon games (i.e. Battle Tower, Trainer Tower).
Arceus is level 80. If you dont count him then the lv 100 magikarp. If I recall correctly, then you can catch a lv. 1-100 Regigigas
Its not possible to catch a level 100 pokemon.
You cannot catch level 100 Pokémon, but you can battle them at the battle frontier.