You can always use an Action Replay code or trade it for another Pokemon online if you didn't have the chance to catch it.
you have to go to spear pillar because galatics are trying to capture dialga and palkia then go to the portal and follow Cynthia
you go to spear pillar to catch dialga/palkia
It ends after the spear pillar/dialga/palkia event when you have 7 badges
You go to Spear Pillar at the top of Mount Coronet. When you get there, Team Galactic should be there. Beat the first two grunts at the staircase and a cut scene should start. After the cut scene, Defeat the two Galactic leaders there, Defeat Cyrus, and Dialga/Palkia is there for the taking. Hope this helped!
You go to Mt. cornet and capture Palkia/Dialga, you also must battle Syrus, Commander Mars and Commander Jupiter on the mountains peak.
You get to Spear Pillar on the top of Mt. Coronet, and after defeating some of the Team Galactic Bosses, you can fight and capture Palkia.
You have to find Cyrus and Defeat him. then you go to Spear Pillar and battle/capture Palkia or Diagla. (Diamond is Dialga Pearl is Palkia.)good luck with the game though!!!!!!!!!!!!!!!! ;)
Go to Spear Pillar, beat Team Galactic and capture Dialga/Palkia. Then the road to Sunnyshore is open.
Defeat Team Galactic on Mt. Coronet and either defeat, capture or run from Dialga (Diamond), Palkia (Pearl) or Giratina (Platinum).
you have to go to spear pillar because galatics are trying to capture dialga and palkia then go to the portal and follow Cynthia
first you gotta find your way to the top of mt coronet then fight the team galactic leader. after that u have to fight palkia and capture it. I suggest using a grass type like torterra. I captured palkia with a poke ball. I put it to sleep after my torterra weakened it.
you need to capture/kill palkia/dialga at mt cornet and go to team galactic base in veilstone city
Get to the top of Mt. Coronet, defeat team galactic and then capture or defeat dialga/palkia. then go back to the place that the grunt was blocking and he should no longer be there
you will get there when you have: defeated team galactic, been to the summit of mt. cornet (sorry i kinda forgot how to spell the name of the mountain) and capture/defeat palkia
They are at their HQ in Veilstone City.
you go through mt.coronet
Beat leader Cyrus of team galactic and then proceed and use the master ball on palkia/dialga (AT THE STONE PILLAR)