Items

Basement

XD Items (Basement)

Item	Location	Notes
Battle CD 05	In the south part of the catwalks in the basement	Only after obtaining the Disc Case in Phenac City.
Rare Candy	In the northwest part of the basement	Only after speaking to Perr in Gateon Port about upgrading the Scooter.
Battle CD 11	In the southwest part of the catwalks in the basement	Only after getting the Scooter upgraded in Gateon Port.
Battle CD 23	In the southeast part of the basement	Only after getting the Scooter upgraded in Gateon Port.
Battle CD 29	In the northwestern part of the catwalks in the basement	Only after clearing Cipher Key Lair.

1F

XD Items (1F)

Item	Location	Notes
Battle CD 49	On the northeastern bookshelf in the eastern room	Only after clearing Cipher Key Lair.
Battle CD 50	On the western bookshelf in the western room	Only after clearing Cipher Key Lair.
Voice Case 1	Obtained from Dr. Kaminko	Only after defeating Greevil at Citadark Isle and clearing Round 1 of the Orre Colosseum, and speaking to Beluh and Senilor in Agate Village about the Pokémon voice problem.
Voice Case 2	Obtained from Dr. Kaminko	Only after removing Combusken's Translator in Agate Village.
Voice Case 3	Obtained from Dr. Kaminko	Only after removing Poochyena's Translator in Agate Village.
Voice Case 4	Obtained from Dr. Kaminko	Only after removing Taillow's Translator in Agate Village.
Voice Case 5	Obtained from Dr. Kaminko	Only after failing to remove Wobbuffet's Translator in Agate Village.
Cry Analyzer	Obtained from Dr. Kaminko	Only after removing Shroomish's Translator in ONBS.

Trainers

First visit

XD Trainers

Trainer	Party	Notes
Kaminko Aide Chobin	Sunkern lv.5

After gaining access to Gateon Port

XD Trainers

Trainer	Party	Notes
Kaminko Aide Chobin	Sunkern lv.6 Magikarp lv.6

After speaking with Perr in Gateon Port about upgrading the Scooter

XD Trainers

Trainer	Party	Notes
Kaminko Aide Chobin	Sunkern lv.26 Gyarados lv.26
Robo Groudon Chobin	Sunflora lv.26 Gyarados lv.26 Hoppip lv.26 Tropius lv.26

After getting the Scooter upgraded in Gateon Port

XD Trainers

Trainer	Party	Notes
Kaminko Aide Chobin	Sunflora lv.26 Gyarados lv.26 Hoppip lv.26 Tropius lv.26

After clearing Cipher Key Lair

XD Trainers

Trainer	Party	Notes
Robo Groudon Chobin	Sunflora lv.37 Gyarados lv.37 Skiploom lv.37 Tropius lv.37
Robo Groudon Chobin	Sunflora lv.38 Gyarados lv.38 Skiploom lv.38 Tropius lv.38	This battle can be repeated indefinitely before defeating Greevil. After defeating Greevil, I am unsure if it is accessible again or what may be needed to unlock it.