The Dropped Item

When you reach Nimbasa City, you'll be able to find the Dropped Item, which is somebody's Xtransceiver. The moment you get this item, you will receive a call on it from the item's owner stating that they would like the Xtransceiver back. They will request to call you at numerous points, but the locations they call you are very specific, only 15 areas each on a specific tile. These are the exact tiles shown below. After a couple of calls, you will learn that the owner of the Xtransceiver is Yancy/Curtis, one of the presenters of a variety of TV programmes in Unova. Yancy will appear if you're male and Curtis if you're female.

Nimbasa City	Route 5	Route 16	Driftveil City	Route 6
Mistralton City	Route 7	Lentimas Town	Undella Town	Route 13
Route 14	Lacunosa Town	Route 12	Route 11	Route 9

Calling them

Once you have had 10 phone calls, they will call you and arrange to meet in Nimbasa City. They will meet you outside the Ferris Wheel and talk to you there. After that, they will register themselves in your Xtransceiver, however they will only appear in certain areas randomly, the same areas as above, but not limited to a single tile.

As you call them, you will have many conversations about a variety of subjects. On the 30th call they'll tell you they want to meet at Nimbasa City where they'll ride the Ferris Wheel with you. Call them to total 50 times, in the 40th call they'll be 'SOUND ONLY', in the 50th call they'll be wearing their work clothes, and cut the line in a second or so.

Trades

Once you have called them anywhere between 30 and 50 times, call the next day and you can meet them outside of the Ferris Wheel where they will trade. They have a variety of Pokémon, whose species depends upon the gender of the character. All these Pokémon have their Hidden Abilities and most aren't available in the Unova Region. You can repeat trades one a day, even repeating the species of the Pokémon.

Yancy - If you're Male

Meowth Level 50	OT: Yancy ルリ ID: 10303 Ability: Unnerve Hold Item: Rare Candy	??? Nature. Date Received. Link Trade. Apparently received at Level 50	Nasty Plot Assurance Captivate Night Slash
		Trader requests any Pokémon

Wobbuffet Level 50	OT: Yancy ルリ ID: 10303 Ability: Telepathy Hold Item: Ragecandybar	??? Nature. Date Received. Link Trade. Apparently received at Level 50	Counter Mirror Coat Safeguard Destiny Bond
		Trader requests any Pokémon

Ralts Level 50	OT: Yancy ルリ ID: 10303 Ability: Telepathy Hold Item: Lava Cookie	??? Nature. Date Received. Link Trade. Apparently received at Level 50	Future Sight Charm Hypnosis Dream Eater
		Trader requests any Pokémon

Shieldon Level 50	OT: Yancy ルリ ID: 10303 Ability: Soundproof Hold Item: Old Gateau	??? Nature. Date Received. Link Trade. Apparently received at Level 50	Endure Metal Burst Iron Head Heavy Slam
		Trader requests any Pokémon

Rhyhorn Level 50	OT: Yancy ルリ ID: 10303 Ability: Reckless Hold Item: Rare Candy	??? Nature. Date Received. Link Trade. Apparently received at Level 50	Bulldoze Chip Away Take Down Drill Run
		Trader requests any Pokémon

Shellos Level 50	OT: Yancy ルリ ID: 10303 Ability: Sand Force Hold Item: Old Gateau	??? Nature. Date Received. Link Trade. Apparently received at Level 50	Rain Dance Body Slam Muddy Water Recover
		Trader requests any Pokémon

Mawile Level 50	OT: Yancy ルリ ID: 10303 Ability: Sheer Force Hold Item: Lava Cookie	??? Nature. Date Received. Link Trade. Apparently received at Level 50	Baton Pass Crunch Iron Defense Sucker Punch
		Trader requests any Pokémon

Spiritomb Level 50	OT: Yancy ルリ ID: 10303 Ability: Infiltrator Hold Item: Old Gateau	??? Nature. Date Received. Link Trade. Apparently received at Level 50	Sucker Punch Nasty Plot Memento Dark Pulse
		Trader requests any Pokémon

Snorlax Level 50	OT: Yancy ルリ ID: 10303 Ability: Gluttony Hold Item: Rare Candy	??? Nature. Date Received. Link Trade. Apparently received at Level 50	Body Slam Block Rollout Crunch
		Trader requests any Pokémon

Teddiursa Level 50	OT: Yancy ルリ ID: 10303 Ability: Honey Gather Hold Item: Ragecandybar	??? Nature. Date Received. Link Trade. Apparently received at Level 50	Charm Rest Snore Thrash
		Trader requests any Pokémon

Spinda Level 50	OT: Yancy ルリ ID: 10303 Ability: Contrary Hold Item: Lava Cookie	??? Nature. Date Received. Link Trade. Apparently received at Level 50	Teeter Dance Psych Up Double-edge Flail
		Trader requests any Pokémon

Togepi Level 50	OT: Yancy ルリ ID: 10303 Ability: Super Luck Hold Item: Ragecandybar	??? Nature. Date Received. Link Trade. Apparently received at Level 50	Teeter Dance Psych Up Double-edge Flail
		Trader requests any Pokémon

Curtis - If you're Female

Mankey Level 50	OT: Curtis テツ ID: 54118 Ability: Defiant Hold Item: Rare Candy	??? Nature. Date Received. Link Trade. Apparently received at Level 50	Cross Chop Thrash Punishment Close Combat
		Trader requests any Pokémon

Wobbuffet Level 50	OT: Curtis テツ ID: 54118 Ability: Telepathy Hold Item: Ragecandybar	??? Nature. Date Received. Link Trade. Apparently received at Level 50	Counter Mirror Coat Safeguard Destiny Bond
		Trader requests any Pokémon

Ralts Level 50	OT: Curtis テツ ID: 54118 Ability: Telepathy Hold Item: Lava Cookie	??? Nature. Date Received. Link Trade. Apparently received at Level 50	Future Sight Charm Hypnosis Dream Eater
		Trader requests any Pokémon

Cranidos Level 50	OT: Curtis テツ ID: 54118 Ability: Sheer Force Hold Item: Old Gateau	??? Nature. Date Received. Link Trade. Apparently received at Level 50	Ancientpower Zen Headbutt Screech Head Smash
		Trader requests any Pokémon

Rhyhorn Level 50	OT: Curtis テツ ID: 54118 Ability: Reckless Hold Item: Rare Candy	??? Nature. Date Received. Link Trade. Apparently received at Level 50	Bulldoze Chip Away Take Down Drill Run
		Trader requests any Pokémon

Shellos Level 50	OT: Curtis テツ ID: 54118 Ability: Sand Force Hold Item: Old Gateau	??? Nature. Date Received. Link Trade. Apparently received at Level 50	Rain Dance Body Slam Muddy Water Recover
		Trader requests any Pokémon

Sableye Level 50	OT: Curtis テツ ID: 54118 Ability: Prankster Hold Item: Lava Cookie	??? Nature. Date Received. Link Trade. Apparently received at Level 50	Shadow Claw Power Gem Confuse Ray Foul Play
		Trader requests any Pokémon

Spiritomb> Level 50	OT: Curtis テツ ID: 54118 Ability: Infiltrator Hold Item: Old Gateau	??? Nature. Date Received. Link Trade. Apparently received at Level 50	Sucker Punch Nasty Plot Memento Dark Pulse
		Trader requests any Pokémon

Snorlax Level 50	OT: Curtis テツ ID: 54118 Ability: Gluttony Hold Item: Rare Candy	??? Nature. Date Received. Link Trade. Apparently received at Level 50	Body Slam Block Rollout Crunch
		Trader requests any Pokémon

Phanpy Level 50	OT: Curtis テツ ID: 54118 Ability: Sand Veil Hold Item: Ragecandybar	??? Nature. Date Received. Link Trade. Apparently received at Level 50	Endure Charm Last Resort Double-edge
		Trader requests any Pokémon

Spinda Level 50	OT: Curtis テツ ID: 54118 Ability: Contrary Hold Item: Lava Cookie	??? Nature. Date Received. Link Trade. Apparently received at Level 50	Teeter Dance Psych Up Double-edge Flail
		Trader requests any Pokémon

Togepi Level 50	OT: Curtis テツ ID: 54118 Ability: Super Luck Hold Item: Ragecandybar	??? Nature. Date Received. Link Trade. Apparently received at Level 50	Teeter Dance Psych Up Double-edge Flail
		Trader requests any Pokémon