hes no where but you can see Saturn in the galactic hideout
yes u can get him you need some idem and you can also get plakia and grintia
personally, i think dialga is stronger than palkia.
After you get the Master Ball from Cyrus, go to Mt. Coronet and into Spear Pillar. After you and your rival beat Commander Mars and Jupiter, Cyrus will Summon Dialga. Then Uxie, Mesprit, and Azelf will come to stop Dialga. Then Cyrus challenges you to a battle. After you beat Cyrus, you can try to catch Dialga.
you see him at spear pillar where you catch palkia and dialga or arceus
Use your Master Ball... But if I were you I'll save the game first then try catch dialga... oops im so stupid i used it on golduck
first you have to catch plakia or dialga. You run all the way back to twinleaf city. once your there you go to the poke mart and talk to the guy. you buy 20 potions and everything he has.
If you have already caught Palkia or Dialga (Palkia-Pearl Dialga-Diamond) then that means that you have already defeated Team Galactic, and you can go to the Pal Park, try to find more legendaries, or anything you want to do, but if not then you have to go to the place where you will catch either Palkia or Dialga and right before you catch them you will encounter Cyrus, the leader of Team Galactic. If you want to know where to find Palkia or Dialga and encounter Cyrus try looking up something like "where do you catch Palkia or Dialga?" or something like that.
you have to beat team galactic and Cyrus and kill or catch palika (if you have dimond dialga)
well the easiest way is to use the masterball Cyrus gives you and catch dialga palkia and girantina with ultra balls
In dimond, you try to catch him on spear point after you battle Cyrus. In pearl, you have to trade for it or use an action replay.
dialga bring about fifty or more pokeballs weaken it till it's hp is yellow/red but DON'T DEFEAT IT!!!!, p.s you find dialga at spear piller when you defeat Cyrus, trainer's note. you can only catch dialga on diamond. you can only catch palkia on pearl. you can catch dialga palkia/AND GARITINA!, i have platinum and caught all of then so i know post a question about how to get garitina on Pokemon DIAMOND! Actually in Diamond and Pearl u just need the Master Ball that Cyrus Gave you beforehand!
If you beat Dialga and Dialga faints, you can no longer catch it.