sorry if i spell them wrong but you can catch dialga, mesprit, uxie, azelf, giratina, hetran,crisselia, and if you consider lucario legendary, him.
p.s. crisselia and mesprit run. also all other legendaries are events.
Regigigas is also obtainable...though you need the three golems from R/S/E...this does not count as an event
the event Pokemon are:
Shaymin lvl 30
Darkrai lvl 40
Arceus lvl 80 or lvl 100 based on which event it is obtained from (the film is the lvl 100)
you get an action replay dumdum!!!
you can get to all islands without events to get the three remaining legendaries are paticipating in an event not possible anymore or action replay, cheating and glitching with the game.
u cant there arent any
The most commonly missed Pokemon in the National Dex are Arceus, Darkrai and Shaymin. These are legendaries in Diamond and Pearl that cannot be caught without action replay or a Nintendo event. Recently there were Nintendo events for all three.
Action replay
No
no you have to get is from an action replay or go to a Pokemon event
Not Possable
It is Impossible without an action replay
You can't without an action replay.
Missingno is not avalible in Pokemon Diamond without help of the Action Replay.
In Diamond & Pearl? Impossible without migrating, trading, or Action Replaying.