Q&A for How to Get Dialga in Pokémon Diamond

You can expect Dialga to know Ancient Power, Dragon Claw, Metal Claw, and its signature move, Roar of Time.

Yes, you can catch Dialga without a Master Ball, though it will be more challenging. You will need to significantly lower its health, use stronger Poké Balls, and prepare a powerful team to sustain the battle while you repeatedly attempt to catch it.

In *Pokémon Diamond* and *Pearl*, you cannot catch both Palkia and Dialga in a single game. To acquire both, you would typically need to trade with another player or play *Pokémon Platinum*.

To get past the locked door in the Veilstone building, you must defeat the Team Galactic Grunt guarding it. This Grunt will drop the Storage Key, allowing you to enter and find the Galactic Key inside.

You cannot catch Dialga after defeating the eighth gym leader. Instead, you must catch it after defeating the seventh gym leader and Team Galactic at Spear Pillar.