Get Pokemon emerald and then you can get all three without cheats or trading
You can if you use action replay :P If you don't use one, then it is impossible to complete without trading as there are only certain Pokemon that can be caught in diamond and vice versa with diamond.
The Pokemon that can be caught without special events, trading, or cheating in Pokemon diamond are: Uxie Mesprit Azelf Dialga Giratina Heatran
No it is not possible. You have to hack or trade.
im sorry i don't think you can however when you catch dialga in Pokemon diamond it will say you saw him in the sinnoh pokedex i hope this helped acyaly you can with a cheat, and it NOT for acton replay!
In Diamond & Pearl? Impossible without migrating, trading, or Action Replaying.
you cant get it without migrating.
You can get a Cyndaquil without trading only by transfering it from a GBA Pokemon Game onto your Pokemon Diamond Version.
Get Pokemon emerald and then you can get all three without cheats or trading
with trading Charizard Mewtwo Groudon Raquazza Kyorge Zapdos Without trading Rayquazza Groudon Kyorge Vaporeon Gyrados Alakazam
There is no other way.
not without trading someone elses Pokemon that's holding it
You can if you use action replay :P If you don't use one, then it is impossible to complete without trading as there are only certain Pokemon that can be caught in diamond and vice versa with diamond.
The Pokemon that can be caught without special events, trading, or cheating in Pokemon diamond are: Uxie Mesprit Azelf Dialga Giratina Heatran
Latios, groudon, Rayquaza, Regice, regirock, registeel, they are the legendaries you catch int he game without cheating or trading
No it is not possible. You have to hack or trade.
The only other way to catch it is to cheat.