Simple. Don't walk.
Mew and Mewtwo are not found anywhere in the Sinnoh region.
The Pokemon that can be caught without special events, trading, or cheating in Pokemon diamond are: Uxie Mesprit Azelf Dialga Giratina Heatran
see 450 Pokemon in the pokedex
It is Impossible without an action replay
You can't without an action replay.
There is a way to do it without cheating. Just simply trade a Pokemon that knows fly. Example: you have a staravia in Pokemon pearl that knows fly. Just trade it to Pokemon diamond.
If you have a r4 with Pokemon diamond on it click on cheat y look walk anywhere then walk through all the walls
Mew and Mewtwo are not found anywhere in the Sinnoh region.
Dialga
You can get a Cyndaquil without trading only by transfering it from a GBA Pokemon Game onto your Pokemon Diamond Version.
no
no
you cant get it without migrating.
i have Pokemon diamond, and played 600 hours. its not possible. but you can catch a ditto, and make Pokemon eggs.
You can't without cheats.
# # #
no