Dialga is a Steel/Dragon-type Legendary Pokmon introduced in Generation IV. It is the mascot of Pokmon Diamond and is said to have the power to control time. Dialga is a powerful Pokmon that can be a valuable addition to any team, so many players want to know how to catch it.
Dialga can be found in the Spear Pillar in Pokmon Diamond, Pearl, and Platinum. To get to the Spear Pillar, you must first defeat the Elite Four and then talk to Professor Rowan. He will give you the Azure Flute, which you can use to summon Dialga. Once you have summoned Dialga, you must battle it. Dialga is a powerful Pokmon, so be sure to bring your strongest team members. If you defeat Dialga, you will have a chance to catch it.