Pokémon: Brilliant Diamond & Shining Pearl Walkthrough

Clean Up / Legendary Pokémon

Post Game

Congratulations, you’ve defeated the Pokémon League have become the Champion of the Sinnoh region!

The game will autosave, take you through a cutscene and then the credits will play. The game will then restart.

When you continue from the main menu, you’ll be at home in Twinleaf.

Despite seeing the credits, we aren’t done just yet!


Speak to your mom and she’ll tell you that your rival has gone off to the Battle Zone. You can reach the Battle Zone by taking a boat from Snowpoint City.

If you’ve followed this guide and battled all of the trainers and done a few extras, you should have completed your Pokédex by having all 150 Pokémon marked as ‘Seen.’

If you have all 150 seen, head to Sandgem.


As soon as you enter Sandgem, you’ll see Dawn or Lucas outside. Speak to them.

They’ll check your Pokédex and then tell you to visit Rowan in the lab.

Enter the lab and speak to Rowan. The OG Professor Oak will show up and upgrade your Pokédex to National Mode.

Rowan will also give you the Poké Radar. You can use it to reveal what patch of grass has a Pokémon in it.

As soon as you exit the lab, Roark will appear and tell you that him and the other Gym Leaders would like to battle you again. So, you can go to each city and battle the leaders in their respective gyms again.

You can visit Dawn or Lucas‘ house here in Sandgem and speak to their sibling. They will tell you about Pokémon Swarms. These are waves of Pokémon from other regions that are appearing in Sinnoh.

When you pause the game with X, you’ll see a message on the bottom of the screen telling where you swarm have appeared. The swarms will change daily.

Hotel Grand Lake

Travel to Hotel Grand Lake by way of Route 214. Go inside of the house to the northwest. Speak to the NPCs and you’ll be given DS Sounds, Catching Charm and the Pokédex completion Certificate for having seen all 150 in Sinnoh.

Ramanas Park

We’ve come here once before, but it was closed then. Routes 219, 220 and 221 will lead you here.

Now that you’re the Champion and have the National Pokédex, you’ll have access to Ramanas Park. You can explore this park to catch Pokémon from all other regions.

When you enter the park, you’ll notice that there are caves you can enter with “enigmatic pedestals” in them. You can put Slates on these pedestals to encounter Legendary Pokémon.

You can get the Slates by trading Mysterious Shards in to the counter at Ramanas Park.

You’ll be able to start off with a Discovery Slate. As you catch more Legendary Pokémon here, more Slates will become available for purchase.

Mysterious Shards can be found by digging them up in the Grand Underground.

  • Kanto Slate – Articuno, Moltres, Zapdos – Pearl Only
  • Johto Slate – Entei, Raikou, Suicune – Diamond Only
  • Genome Slate – Mewtwo
  • Soul Slate – Latias, Latios
  • Rainbow Slate – Ho-oh – Diamond Only
  • Squall Slate – Lugia – Pearl Only
  • Tectonic Slate – Groudon
  • Oceanic Slate – Kyogre
  • Stratospheric Slate – Rayquaza
  • Discovery Slate – Regice, Registeel, Regirock

Use the same tactics you used before when catching the Lake Guardians and Dialga/Palkia here.

Hearthome City

Fly to Hearthome City and enter Bebe’s house directly right from the Pokémon Center. Speak to her and she’ll give you an Eevee.

Eterna City

Fly to Eterna City and go to the house in the southwest corner of town. You’ll find Oak inside. Speak to him and he will give you an Upgrade which can be given to Porygon to evolve it if it is traded.

Old Chateau

Return to Eterna Forest at night and head to the Old Chateau. You’ll find Gardenia outside. She’ll talk about the rumors of a Pokémon on the mansion. Go inside and interact with the flashing TV to encounter Rotom. Make sure to make save before doing so.

Pokémon Mansion

Head back to the Mansion on Route 212. Speak to Mr. Backlot. Answer ‘Yes’ to all of his questions and then Pokémon from other regions will become available to catch in the Trophy Garden.


Fly to Canalave City and go to Sailor Eldritch’s house to the southwest of town.

Go inside and try to speak to his son while he sleeps. His mom will explain that they fear their son is under the control of Darkrai.

Speak to Sailor Eldritch on the dock and he will ask you to help them by obtaining the Lunar Feather. The feather is found on the aptly named Fullmoon Island. Agree to help him and he will take you there.

Follow the path to Cresselia and then interact with it. It will teleport away leaving behind the Lunar Feather. Pick it up and return to Eldritch’s son to free him from the nightmares.

As for Cresselia, it will now be roaming the Sinnoh region just like Mesprit was. You can use the exact same strategy to catch Cresselia as you did with Mesprit.

If you don’t want to do that all over again, you can use your Master Ball on it if you’d like. Remember, you only get one Master Ball. The remaining legendary Pokémon can be caught with other Balls, but the Master Ball is also good for a random shiny encounter. The choice is yours!


Fly to Veilstone City and head south to Route 214. Keep going south on 214 until you see the opening on the right side. This is Spring Path.

Follow Spring Path until you come to Sendoff Spring. The wild Pokémon in here will be very strong.

Walk through the grass patch and use Rock Climb to climb up.

Follow the path to the right until you see another Rock Climb location at the north side. Rock Climb down and enter Turnback Cave. Use Defog when you enter.

You’ll be going through randomized rooms in here. In order to reach Giratina, you need to pass through three rooms that have pillars before going through 30 total rooms.

Interact with the pillar in the middle of the room when you come to one.

After you found three, whatever door you choose next will take you to Giratina.

Heal your party if needed and save your game before initiating the encounter.


Before you can catch Regigigas, you will need to have caught all three of the Regis in Ramanas Park. You will also need to have them all in your party.

Fly to Snowpoint City and head north to the temple. Speak to the NPC and she will say you aren’t allowed in. Candice will then appear, put in the good word for you and you’ll be allowed in.

Once you have all three with you, enter the temple and then solve the puzzle.

Save your game before approaching the Regigigas statue and waking it up.

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