Pokémon Mystery Dungeon: Explorers of Time Glitches

exclusive pokemon
Some cheats say that there are Pokemon that you can get on darkness/time e.g. rotom,burmy,lopbunny. But actually when you type in a code to recruit a Pokemon ,who u apparently can't get on your version, it actually works and u can actually recruit the Pokemon. This doesn't work with mewtwo or celbi. I have explorers of time and have recruited Rotom.