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With your gummi ship.
Kairi gives Sora the Oathkeeper in the Secret Waterway after escaping from Hollow Bastion with her.
You mean alice? She is at Hollow Bastion.
Hollow Bastion/Radient Garden
In order to remember the true name of hollow bstion, you have to destroy the MCP.
You have to go to a save spot, and select world map. That will take you to the world map (Duhh) and you can go to hollow bastion to find merlin.
No one except Sora Donald and Goofy
In Hollow Bastion/Radient Garden
The Grand Hall is in Hollow Bastion, so to get to Hollow Bastion, you have to get through all the worlds before it which include: Awakening Destiny Islands Traverse Town Wonderland Olympus Coliseum Deep Jungle Agrabah Monstro Halloween Town Atlantica and Neverland. After all these worlds are fully complete(With the exception of Olympus Coliseum since it has tournaments and it's keyhole is only open with the yellow trinity ability) you get to Hollow Bastion, then through there you have to go through the Rising Falls and then onto the Castle Gates and the underground Waterway system for Hollow Bastion.
i get them by going 2 the grand hall in hollow bastion
The computer room in hollow bastion. I think the storyline will eventually bring you there.
Showdown at Hollow Bastion