Pokémon Platinum

Pokémon Platinum Version
Also known as: Pocket Monsters Platinum (JP), Pocket Monsters Pt: Giratina (KR) Developer: Game Freak Publishers: The Pokémon Company (JP), Nintendo (INT) Platform: Nintendo DS Released in JP: September 13, 2008 Released in US: March 22, 2009 Released in EU: May 22, 2009 Released in AU: May 14, 2009 Released in KR: July 2, 2009 This game has unused areas. This game has unused code. This game has hidden development-related text. This game has unused graphics. This game has unused models. This game has unused items. This game has unused music. This game has regional differences. This game has a development article This game has a prototype article

This game/console's online features are no longer supported. While this game/console's online features were once accessible, they are (as of May 20, 2014) no longer officially supported and online-exclusive features may be documented as now-unseen content.

To do: One of Barry's rematch teams goes unused in this version. Make a development page for the 9/9/2020 Pokémon Platinum source code leak and the 10/12/2024 Pokémon Platinum Full SVN leak.

Pokémon Platinum is the third version to the 4th generation. It shares a lot of unused content with Diamond and Pearl.

Sub-Pages

Development Info

Prototype Info

Unused Maps There was a gym in Jubilife City?

Unused Map Models Solaceon Ruins had more rooms?

Regional Differences Game Corner controversies spread to Europe!

Inaccessible Content All the content that died along with Nintendo WFC. Rest in peace.

Unused Graphics

Animation Frames

Giratina

Alternate unused animation frames for Giratina's Altered and Origin forms, respectively. The game uses different sprites for the different animation frames. The unused sprite for its Origin form was actually shown in a pre-release screenshot.

Shaymin

An alternate unused animation frame for Shaymin in its Land Form; however, different sprites are used for the first and second animation frames.

Cherrim (Sunshine form)

To do: Rip the Animations

Normal	Shiny

Backsprite

Normal	Shiny

Cherrim's Sunshine form has both an unused front and back sprite frame for a sending out animation, which is normally impossible to see. Cherrim always enters the battle in the Overcast form, even when the sun is already active. The 2nd frame front sprite was cleaned up a little from the one in Diamond/Pearl.

NPCs and Objects

ketsuban

The sprite is a placeholder that occupies twelve slots. The red text reads "ketsuban", which translates to "missing number".

bigman

A different version of the large NPC's sprite. The unused version looks more stretched-out, making the sprite seem fat.

girl1

This sprite set is in the style of FireRed and LeafGreen. The developers actually went for a similar design in early versions of Diamond and Pearl.

man1

Same as above, but this time it depicts a green-haired male NPC.

Rotom

Unused	Used

Early gray versions of the Rotom items can be found in the files for overworld sprites. Their filenames are firebox, skybox, icebox, waterbox and grassbox. It is worth noting that these are actually found after the used sprites.

Debug UI

Debug UI graphics stored in \debug\cb_edit\d_test.narc. Font used is Comic Sans.

(Source: Original TCRF research)

Unused Items

While the Member Card and Oak's Letter that went unused in Diamond & Pearl were made obtainable by event in Platinum, the rest of the unused items from it were all carried over to Platinum unchanged; see that game's page for more details.

Unused Text

Text archive 602 (as seen in DSPRE; pt.602 in Poké Corpus) contains the dialogues for characters invited to the Villa. Two lines from the Japanese release appear blanked out in every international version. The dialogue suggests Caitlin and Darach were planned as visitors.

ID	Japanese	Translation
pt.602.97	カトレア『……いい　べっそうね	Caitlin: … Nice villa, isn't it?
pt.602.98	コクラン『おじょうさま そろそろ　キャッスルに……	Darach: Lady Caitlin, we shall be at the Castle soon…

Unused Roaming Darkrai

In the game's files, there is data for an unused encounter with a roaming Darkrai at Lvl. 40. It is released on the map if one executes script command 0x21C with its parameter set to 0x2. The existence of this battle suggests that Darkrai was originally planned to be caught in the same fashion as its counterpart Cresselia, rather than being a stationary opponent at the event-exclusive Newmoon Island. This data also exists in Pokémon Diamond & Pearl.

Unused Music

The entire soundbank from Diamond & Pearl is carried over. As such, every sequence unused in Diamond & Pearl naturally goes unused here too, with a few that were previously used now no longer being so as well. The file "sound_data.sdat" is the same from Diamond & Pearl, and is completely unused.

SEQ_TITLE00

The opening theme from Diamond & Pearl. The opening ambience is altered mildly in Platinum, though the track is otherwise identical.

SEQ_TV_END

Two ominous themes used upon starting a new file in Diamond & Pearl, where a report about a red Gyarados plays on the protagonist's TV. This scenario was changed to a report about Professor Rowan returning from the Kanto region in Platinum, with calmer music playing instead.

Unused Move Data

Unused Move Effects

ID	Effect
0C	Raises user's Speed by 1 stage.
0E	Raises user's Special Defense by 1 stage.
0F	Raises user's Accuracy by 1 stage.
15	Lowers enemy's Special Attack by 1 stage.
16	Lowers enemy's Special Defense by 1 stage.
37	Raises user's Accuracy by 2 stages.
38	Raises user's Evasion by 2 stages.
3D	Lowers opponent's Special Attack by 2 stages.
3F	Lowers opponent's Accuracy by 2 stages.
40	Lowers opponent's Evasion by 2 stages.
4A	Hits opponent and lowers opponent's Evasion by 1 stages.
60	Hits opponent. Also unused in Gen 3.
6E	Hits opponent. Also unused in Gen 3.
83	Hits opponent. Also unused in Gen 3.
85	Hits opponent. Was used for Synthesis in Gen 3.
86	Hits opponent. Was used for Moonlight in Gen 3.
8D	Hits opponent. Unused since Gen 2.
9D	Hits opponent. Was used for Softboiled in Gen 3.
A3	Hits opponent. Also unused in Gen 3.
108	Similar to Splash; displays the text "But nothing happened!"/"しかし　なにもおこらない"

Unused Contest Effect

Earn +2 for each
time the same Judge
is chosen.

しんさいんが
かぶるごとに＋２

Each doubled
Judge: +2

しんさいんが
かさなるごとに＋２

Effect 0x03 is a unique unused contest effect that is intended to increase appeal by two extra points every time the same judge is chosen. However, this function is incomplete and doesn't seem to work. It also comes with proper text and in-game descriptions.

Unseen Terrain Effects

The only marsh tiles that can be battled upon are located in the Great Marsh, where Pokémon moves can't be used, but the handful of moves that change based on the terrain type still have specific effects for marsh terrain coded in.

Move	Effect
Camouflage	Changes user's type to Ground
Nature Power	Becomes the move Mud Bomb
Secret Power	May lower the target's Speed by 1 stage; uses the animation of Mud Shot

This effect for Camouflage is shared with the used ones for sand and for plain terrain, but the other two are completely unique.

(Source: Bulbapedia)

Unused Wild Held Item Data

Some Pokémon, when found in the wild, have a chance of holding an item. This held item data also exists for some Pokémon which cannot be caught in the wild in the final game, however, rendering these assignments unused.

#	Pokémon	Held Items	Note
012	Butterfree	(5%) Silver Powder
015	Beedrill	(5%) Poison Barb
026	Raichu	(5%) Oran Berry
036	Clefable	(5%) Moon Stone (50%) Leppa Berry
038	Ninetales	(50%) Rawst Berry
047	Parasect	(5%) Big Mushroom (50%) Tiny Mushroom
053	Persian	(5%) Quick Claw
059	Arcanine	(100%) Rawst Berry
062	Poliwrath	(5%) King's Rock
065	Alakazam	(5%) TwistedSpoon
075	Golem	(5%) Everstone Stone
078	Rapidash	(5%) Shuca Berry
085	Dodrio	(5%) Sharp Beak
089	Muk	(5%) Nugget
091	Cloyster	(5%) Big Pearl (50%) Pearl
105	Marowak	(5%) Thick Club
110	Koffing	(5%) Smoke Ball
121	Starmie	(5%) Star Piece (50%) Stardust
124	Jynx	(100%) Aspear Berry
125	Electabuzz	(50%) Electirizer	Diamond & Platinum 50%, Pearl 5%
126	Magmar	(50%) Magmarizer	Diamond 5%, Pearl & Platinum 50%
143	Snorlax	(100%) Leftovers
149	Dragonite	(5%) Dragon Scale
151	Mew	(100%) Lum Berry
162	Furret	(5%) Sitrus Berry (50%) Oran Berry
186	Politoed	(5%) King's Rock
199	Slowking	(5%) King's Rock
230	Kingdra	(5%) Dragon Scale
232	Donphan	(5%) Passho Berry
242	Blissey	(5%) Lucky Egg (50%) Oval Stone
250	Ho-oh	(100%) Sacred Ash
251	Celebi	(100%) Lum Berry
276	Taillow	(5%) Charti Berry
284	Masquerain	(5%) Silver Powder
286	Breloom	(5%) Kebia Berry
293	Whismer	(5%) Chesto Berry
295	Exploud	(5%) Chesto Berry
295	Hariyama	(5%) King's Rock
301	Delcatty	(5%) Leppa Berry
305	Lairon	(5%) Hard Rock
306	Aggron	(5%) Hard Rock
317	Swalot	(5%) Big Pearl
326	Grumpig	(5%) Tenga Berry
328	Trapinch	(5%) Soft Sand
345	Lileep	(5%) Big Root
346	Cradily	(5%) Big Root
353	Shuppet	(5%) Spell Tag
362	Glalie	(5%) Babari Berry
366	Clamperl	(5%) Big Pearl	Available in Diamond & Pearl
367	Huntail	(5%) DeepSeaTooth
368	Gorebyss	(5%) DeepSeaScale
372	Shelgon	(5%) Dragon Fang
373	Salamence	(5%) Dragon Fang
374	Beldum	(5%) Metal Coat
375	Metang	(5%) Metal Coat
376	Metagross	(5%) Metal Coat
385	Jirachi	(100%) Star Piece
398	Staraptor	(5%) Yache Berry
407	Roserade	(5%) Poison Barb
413	Wormadam	(5%) Silver Powder
414	Mothim	(5%) Silver Powder
416	Vespiquen	(5%) Poison Barb
421	Cherrim	(5%) Miracle Seed
428	Lopunny	(5%) Chople Berry
431	Glameow	(5%) Cheri Berry	Available in Pearl
432	Purugly	(5%) Cheri Berry	Available in Pearl
433	Stunky	(5%) Pecha Berry	Available in Diamond
434	Skuntank	(5%) Pecha Berry	Available in Diamond
445	Garchomp	(5%) Haban Berry
461	Weavile	(5%) Quick Claw (50%) Grip Claw
462	Magnezone	(5%) Metal Coat
463	Lickilicky	(5%) Lagging Tail
466	Electivire	(50%) Electirizer	Diamond & Platinum 50%, Pearl 5%
467	Magmortar	(50%) Magmarizer	Diamond 5%, Pearl & Platinum 50%
469	Yanmega	(5%) Wide Lens
476	Probopass	(5%) Hard Stone
477	Dusknoir	(5%) Kasib Berry
478	Froslass	(5%) Babiri Berry

Unused Pokétch Apps

The "Stopwatch" and "Alarm Clock" apps for the Pokétch are unused, which was also the case in Diamond and Pearl. They are assumed to have been planned for event distribution, but they were never distributed in any event.

(Source: Bulbapedia)

Stopwatch

Name (EN)	Name (JP)	Description (EN)	Description (JP)	Obtain text (EN)	Obtain text (JP)
STOPWATCH	ストップウォッチ	The Stopwatch is used for measuring time precisely. How quickly can you zip through the Cycling Road?	「ストップウォッチ」は　じかんを　はかることが　できます　サイクリングロードを　なんびょうで　かけぬけられる？	The Stopwatch app keeps precise time.	アプリ「ストップウォッチ」で　じかんを　はかることが　できます

Alarm Clock

Name (EN)	Name (JP)	Description (EN)	Description (JP)	Obtain text (EN)	Obtain text (JP)
ALARM CLOCK	アラームどけい	The Alarm Clock can be set to sound every 24 hours. Set the alarm time with the lower button. The top button turns it on.	「アラームどけい」は　２４じかんの　アラームが　つかえます　したのボタンで　じこくを　あわせて　うえのボタンで　セットします！	The Alarm Clock app operates on a 24-hour system.	アプリ「アラームどけい」で　２４じかんの　アラームが　つかえます

App 00

Probably a placeholder. The text reads アプリ００ (App 00).

App 12

Probably a placeholder. The text reads アプリ１２ (App 12).

App 26

Probably a placeholder. The text reads アプリ２６ (App 26).

Menu

Appears to be an early version of a bottom-screen menu. The buttons do nothing when pressed.

Backlight

Toggles the bottom screen's backlight.

Unused Goods

ID	Sprite	Name (EN)	Name (JP)	Description (EN)	Description (JP)
0x58		Great Trophy	すごいトロフィ	An impressive trophy awarded only to seemingly indefatigable Pokémon.	だれも　かてないほど　つよい　ポケモン にだけ　おくられる　すごい　トロフィ
0x59		Ball Ornament	ボールのオブジェ	A commemorative object modeled after a Poké Ball.	モンスターボールの　かたちを　した きねんすべき　オブジェ
0x5A		Round Ornament	まんまるオブジェ	A very valuable round object that glows in seven colors.	なないろに　ひかる とても　きちょうな　まるい　オブジェ
0x5B		Clear Ornament	とうめいオブジェ	A very valuable object that is crystal clear.	すきとおるほど　とうめい とても　きちょうな　オブジェ
0x7A		MANAPHY Doll	マナフィドール	A rare Manaphy Doll.	マナフィの　かたちを　した きちょうな　にんぎょう
0x7D		MAGNEZONE Doll	ジバコイルドール	A big Magnezone Doll.	ジバコイルの　かたちを　した おおきな　にんぎょう

Six unused decorative goods that have not been distributed can be found in the game's files. The Clear and Round ornaments may have been intended to be version exclusives for Diamond and Pearl.

Unused Pal Park Species Data

When transferring Pokémon from Generation III games into Platinum through the Pal Park feature, the location and appearance rate for each one as well as the score bonus for catching it are determined on a per-species basis. As with Diamond and Pearl, every species in the game has unique data for this, including those that are newly-introduced to Generation IV and therefore cannot be encountered in Pal Park during normal gameplay.

#	Pokémon	Area	Score	Rate
387	Turtwig	Forest	50	30
388	Grotle	Forest	80	10
389	Torterra	Forest	90	3
390	Chimchar	Field	50	30
391	Monferno	Field	80	10
392	Infernape	Field	90	3
393	Piplup	Pond	50	30
394	Prinplup	Pond	80	10
395	Empoleon	Pond	90	3
396	Starly	Field	30	50
397	Staravia	Field	50	30
398	Staraptor	Field	70	20
399	Bidoof	Field	30	50
400	Bibarel	Field	50	30
401	Kricketot	Forest	50	30
402	Kricketune	Forest	70	20
403	Shinx	Field	50	30
404	Luxio	Field	70	20
405	Luxray	Field	80	10
406	Budew	Field	80	10
407	Roserade	Field	80	10
408	Cranidos	Mountain	70	20
409	Rampardos	Mountain	80	10
410	Shieldon	Mountain	70	20
411	Bastiodon	Mountain	80	10
412	Burmy	Forest	50	30
413	Wormadam	Forest	70	20
414	Mothim	Forest	70	20
415	Combee	Forest	50	30
416	Vespiquen	Forest	70	20
417	Pachirisu	Forest	50	30
418	Buizel	Forest	70	20
419	Floatzel	Mountain	70	20
420	Cherubi	Mountain	80	10
421	Cherrim	Field	90	3
422	Shellos	Sea	50	30
423	Gastrodon	Sea	70	20
424	Ambipom	Pond	50	30
425	Drifloon	Pond	70	20
426	Drifblim	Forest	80	10
427	Buneary	Field	50	30
428	Lopunny	Field	70	20
429	Mismagius	Forest	80	10
430	Honchkrow	Forest	80	10
431	Glameow	Field	50	30
432	Purugly	Field	70	20
433	Chingling	Field	70	20
434	Stunky	Mountain	80	10
435	Skuntank	Mountain	50	30
436	Bronzor	Mountain	70	20
437	Bronzong	Mountain	80	10
438	Bonsly	Field	90	3
439	Mime Jr.	Field	90	3
440	Happiny	Field	50	30
441	Chatot	Field	70	20
442	Spiritomb	Field	80	10
443	Gible	Mountain	50	30
444	Gabite	Mountain	70	20
445	Garchomp	Pond	50	30
446	Munchlax	Pond	70	20
447	Riolu	Field	70	20
448	Lucario	Field	50	30
449	Hippopotas	Field	70	20
450	Hippowdon	Sea	80	10
451	Skorupi	Sea	50	30
452	Drapion	Sea	70	20
453	Croagunk	Forest	90	3
454	Toxicroak	Mountain	50	30
455	Carnivine	Mountain	70	20
456	Finneon	Mountain	80	10
457	Lumineon	Mountain	90	3
458	Mantyke	Mountain	90	3
459	Snover	Mountain	50	30
460	Abomasnow	Mountain	70	20
461	Weavile	Mountain	80	10
462	Magnezone	Mountain	80	10
463	Lickilicky	Field	80	10
464	Rhyperior	Mountain	80	10
465	Tangrowth	Forest	80	10
466	Electivire	Mountain	80	10
467	Magmortar	Mountain	80	10
468	Togekiss	Field	80	10
469	Yanmega	Field	80	10
470	Leafeon	Field	90	3
471	Glaceon	Field	90	3
472	Gliscor	Mountain	80	10
473	Mamoswine	Mountain	80	10
474	Porygon-Z	Field	80	10
475	Gallade	Field	80	10
476	Probopass	Mountain	80	10
477	Dusknoir	Forest	80	10
478	Froslass	Mountain	80	10
479	Rotom	Field	90	3
480	Uxie	Field	90	3
481	Mesprit	Field	90	3
482	Azelf	Field	90	3
483	Dialga	Mountain	90	3
484	Palkia	Mountain	90	3
485	Heatran	Mountain	90	3
486	Regigigas	Mountain	90	3
487	Giratina	Mountain	90	3
488	Cresselia	Forest	90	3
489	Phione	Sea	90	3
490	Manaphy	Sea	100	1
491	Darkrai	Mountain	100	1
492	Shaymin	Field	100	1
493	Arceus	Mountain	100	1

(Source: Veekun)

Lost Debug Mode

To do: Supposedly, プラチナ.srl from the 2024 Teraleak is a debug ROM for Platinum. Please update this section to be about that debug mode instead.

More than 500 text strings can be found, talking about changing values for unknown debugging features. However, the debug menu code is probably lost.
Some example strings of interest (there are many more):

<file id="337">
<text id="29">
	Boot on scripts
</text>
<text id="30">
	Field BGM Tempo
</text>
<text id="31">
	Test Script
</text>
<text id="32">
	None
</text>
<text id="33">
	Debug Scrpt
</text>
<text id="34">
	Shaymin \and Marley
</text>
<text id="35">
	3 Lakes
</text>
</file>
<file id="339">
<text id="34">
	Underground debug
</text>
<text id="35">
	communication traffic
</text>
<text id="36">
	\v0134ぁ\x0000\x0000 bytes are being sent every time.
</text>
</file>
<file id="340">
<text id="0">
	Advance: months
</text>
<text id="1">
	Turn back: months
</text>
<text id="2">
	Advance: days
</text>
<text id="3">
	Turn back: days
</text>
<text id="4">
	Advance: hours
</text>
<text id="5">
	Turn back: hours
</text>
<text id="6">
	Advance: minutes
</text>
<text id="7">
	Turn back: Minutes
</text>
</file>
<file id="341" change="false">
<text id="0">
	Set Camera
</text>
<text id="1">
	Swaying grass
</text>
<text id="2">
	Height Check B
</text>
<text id="3">
	Height Check G
</text>
<text id="4">
	Camera
</text>
<text id="5">
	Change player’s height
</text>
<text id="6">
	Camera Info
</text>
<text id="7">
	Camera List
</text>
<text id="8">
	Zone Camera List
</text>
<text id="9">
	Animation
</text>
<text id="10">
	Fishing
</text>
<text id="11">
	Travelling Pokémon
</text>
<text id="12">
	Pokémon mass outbreak
</text>
<text id="13">
	Safari
</text>
<text id="14">
	GBA
</text>
<text id="15">
	Distance
</text>
<text id="16">
	X-axis
</text>
<text id="17">
	Y-axis
</text>
<text id="18">
	Z-axis
</text>
<text id="19">
	Perspective
</text>
</file>

Archive Files

Two text files left over by the developers. In the filenames, "tw" refers to "tornworld" (the Distortion World), and "uground" refers to the Underground.

/*****************************************************************************
	Archive file index definition.
	File: tw_arc_etc.naix

	This file was created by NINTENDO NITRO-System Archiver.

	Update:2008-01-29T15:45:20
 *****************************************************************************/

#ifndef NARC_TW_ARC_ETC_NAIX_
#define NARC_TW_ARC_ETC_NAIX_

enum {
	NARC_tw_arc_etc_yabu_worldbg_NCGR = 0,
	NARC_tw_arc_etc_yabu_worldbg_NCLR = 1,
	NARC_tw_arc_etc_yaby_worldbg0_NSCR = 2,
	NARC_tw_arc_etc_yabu_cloud_01_NCER = 3,
	NARC_tw_arc_etc_yabu_cloud_01_NCGR = 4,
	NARC_tw_arc_etc_yabu_cloud_01_NANR = 5,
	NARC_tw_arc_etc_yabu_cloud_02_NCER = 6,
	NARC_tw_arc_etc_yabu_cloud_02_NCGR = 7,
	NARC_tw_arc_etc_yabu_cloud_02_NANR = 8,
	NARC_tw_arc_etc_yabu_cloud_03_NCER = 9,
	NARC_tw_arc_etc_yabu_cloud_03_NCGR = 10,
	NARC_tw_arc_etc_yabu_cloud_03_NANR = 11,
	NARC_tw_arc_etc_yabu_cloud_04_NCER = 12,
	NARC_tw_arc_etc_yabu_cloud_04_NCGR = 13,
	NARC_tw_arc_etc_yabu_cloud_04_NANR = 14,
	NARC_tw_arc_etc_yabu_cloud_05_NCER = 15,
	NARC_tw_arc_etc_yabu_cloud_05_NCGR = 16,
	NARC_tw_arc_etc_yabu_cloud_05_NANR = 17,
	NARC_tw_arc_etc_yabu_cloud_06_NCER = 18,
	NARC_tw_arc_etc_yabu_cloud_06_NCGR = 19,
	NARC_tw_arc_etc_yabu_cloud_06_NANR = 20,
	NARC_tw_arc_etc_yabu_cloud_07_NCER = 21,
	NARC_tw_arc_etc_yabu_cloud_07_NCGR = 22,
	NARC_tw_arc_etc_yabu_cloud_07_NANR = 23,
	NARC_tw_arc_etc_cloud_all_NCLR = 24
};

/* NARC_TW_ARC_ETC_NAIX_ */
#endif

/*****************************************************************************
	Archive file index definition.
	File: ugroundeffect.naix

	This file was created by NINTENDO NITRO-System Archiver.

	Update:2007-12-05T16:08:12
 *****************************************************************************/

#ifndef NARC_UGROUNDEFFECT_NAIX_
#define NARC_UGROUNDEFFECT_NAIX_

enum {
	NARC_ugroundeffect_uground_cell_resdat = 0,
	NARC_ugroundeffect_uground_cellanm_resdat = 1,
	NARC_ugroundeffect_uground_char_resdat = 2,
	NARC_ugroundeffect_uground_char2_resdat = 3,
	NARC_ugroundeffect_uground_clact_cldat = 4,
	NARC_ugroundeffect_uground_pltt_resdat = 5,
	NARC_ugroundeffect_uground_pltt2_resdat = 6
};

/* NARC_UGROUNDEFFECT_NAIX_ */
#endif

(Source: Original TCRF research)

Arceus

The Hall of Origin event from Diamond and Pearl still exists in Platinum. Arceus also still has its ??? form from Diamond and Pearl. Since the only difference visually is a palette swap, nothing needed to be updated for it to work with the new animations.

Arceus also has a Shiny palette for each of its 18 forms. Because the only way to obtain it legitimately was through distributions, the Shiny version of Arceus was left unobtainable through normal means. However, with the unused Hall of Origin event, the player is theoretically able to catch Shiny Arceus. Shiny Arceus was later made available as a distribution via serial code in Omega Ruby and Alpha Sapphire with the purchase of tickets to the 18th Pokémon movie, and was finally made available worldwide in Pokémon Brilliant Diamond and Shining Pearl after update 1.3.0.

Oddities

Stat Trainers

The overworld sprites for the so-called "Stat Trainers" are listed as seven1 to seven5. This indicates that two more characters were planned to be added, further supported by the fact that the sprites are followed by two placeholders (ketsuban).

Leaked document DP全仕様一覧051110.xls, which mentions the features of the upcoming Diamond and Pearl games, has the following text about the stat trainers:

Japanese	Translation
７人衆 主人公とタッグを組めるトレーナー達。左右非対称な容姿。各場所に居る。ポケッチで呼び出そう。	The Seven Trainers These are trainers that can team up with the main character. They have an asymmetrical appearance and can be found in various locations. The protagonist can ask for their help through the Pokétch.
・弟子 ７人衆の一人。	The disciple is one of the Seven Trainers.