Here are all the Gen 4 Legendary Pokémon available in Pokémon Omega Ruby and Alpha Sapphire. And there are plenty of them!

Pokémon Omega Ruby and Alpha Sapphire logo
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Cresselia

Catching the Legendary Pokémon Cresselia remains something of a mystery, as it appears on Crescent Isle, south of Ever Grande City, which shows up at random like the other Mirage Spots. Once on this island, you will find a portal leading to the precious Cresselia.

Your chances of getting it are not very high compared to the other Legendaries, but they seem to increase when you receive Mirage Spots online (via StreetPass in particular).

Cresselia portal


Cresselia
Psy
Level 50
Levitate
–
Glace Aurora Beam Psy Future Sight
Glace Mist Ténèbres Night Slash

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Heatran

You can only obtain Heatran after facing Primal Kyogre/Groudon.

Heatran, the Fire/Steel-type Legendary, is one of the easiest Legendaries to find, as you simply need to go to the Scorched Slab on Route 120. When you arrive, you will spot Gym Leader Flannery, who tells you she is looking for this Pokémon. Then use Surf to get inside the Scorched Slab and, once you are in, you will see the portal leading to Heatran.

Heatran portal

Go through it to face it.


Heatran
FeuAcier
Level 50
Flash Fire
–
Acier Metal Sound Ténèbres Crunch
Ténèbres Scary Face Feu Lava Plume

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Regigigas

Once you have caught the trio of Regirock, Regice and Registeel, you can unlock Regigigas, who is none other than the creator of this trio. If you have not done so yet, go and catch the three golems first:
The Regi trio: Regirock, Regice and Registeel

Pokémon ORAS - RegigigasTo unlock this Pokémon, head to Pacifidlog Town, then go into the house in the north-east of the town. Inside, a girl will tell you the story of her grandfather, which will let you learn how to get this famous Pokémon and, above all, where to find it.

Next, you need to bring the trio of Regice, Regirock and Registeel in your party. Have Regice hold an ice-related item such as the Casteliacone, the Snowball or the Never-Melt Ice, and give it a nickname. Once that is done, go during the daytime to the cave where Regice was, then stand in the middle of the cave. That is when Regigigas will come to face you.


Regigigas
Normal
Level 50
Slow Start
–
Normal Foresight Combat Revenge
Roche Wide Guard Psy Zen Headbutt

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The Uxie, Mesprit and Azelf trio

So you will be able to meet and catch all three Pokémon: Créhelf, Créfollet and Créfadet!

Pokémon ORAS - PortalAs you explore the vast skies of Hoenn, you will come across islands that are not marked on your map. This is the case of the Nameless Cavern, the place where the trio of Uxie, Mesprit and Azelf can be found. Enter the cave, then go through the portal to find one of the Pokémon of this trio.

  • Mesprit is available from 4:00 a.m. to 7:59 p.m. (during the day).
  • Uxie is available from 8:00 p.m. to 8:59 p.m. (at dusk).
  • Azelf is available from 9:00 p.m. to 3:59 a.m. (at night).
  • Important note: the times above refer to when you enter the cave. Once you are inside, the Pokémon that comes out of the portal will be the one available at the time you entered, even if you reset!

The only catch is that, to unlock this trio, you will need three Pokémon in your party with their friendship at the maximum.


Créfollet
Psy
Level 50
Levitate
–
Normal Lucky Chant Psy Future Sight
Fée Charm Psy Extrasensory

Créhelf
Psy
Level 50
Levitate
–
Normal Yawn Psy Future Sight
Psy Amnesia Psy Extrasensory

 


Créfadet
Psy
Level 50
Levitate
–
Normal Uproar Psy Future Sight
Ténèbres Nasty Plot Psy Extrasensory

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Palkia and Dialga

First of all, be aware that Palkia is only available in Pokémon Omega Ruby and Dialga in Pokémon Alpha Sapphire.

To unlock the Legendary Pokémon Palkia and Dialga, you will need to have the trio of Créhelf, Créfadet and Créfollet in your party.
When you fly through the sky near Dewford Town, you will discover a huge tear in the space-time continuum.

Palkia Dialga Mirage Spot

Get close to enter it and challenge Palkia or Dialga, depending on your version.


Dialga
AcierDragon
Level 50
Pressure
–
Combat Aura Sphere Acier Iron Tail
Dragon Roar of Time Acier Flash Cannon

Palkia
EauDragon
Level 50
Pressure
–
Combat Aura Sphere Sol Earth Power
Dragon Spacial Rend Eau Hydro Pump

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Giratina

You can catch Giratina, the Dragon/Ghost-type Legendary, in Omega Ruby and Alpha Sapphire provided you have Palkia and Dialga together in your party.

Once this condition is met, simply return to the place where you faced Palkia/Dialga, near Dewford Town, and you will see that the tear in the space-time continuum has returned.

Palkia Dialga Mirage Spot

Enter it to challenge Giratina.


Giratina
SpectreDragon
Level 50
Pressure
–
Combat Aura Sphere Spectre Shadow Force
Spectre Shadow Claw Spectre Hex

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