Project Pokémon Bot

As early as June 12th, 2017, this event has been uploaded onto the servers for testing.

Two different versions (namely Full TID 8087 and 080817) were uploaded, and differs from the final release.

English example:
 Species   Salazzle   Nickname   (default, save lang)   OT   Clovis   TID   (various)   Distribution   Serial Code   Location   a lovely place   Dates   (Unreleased)  PID   Cannot Be Shiny   Games   SM    Lv. 50      Nature   Random   Ability   Corrosion (1)   Item   Focus Sash   Bundled Item   None 
Classic   Moves   (ITALIC means Relearnable)   Fake Out   Toxic   Sludge Bomb   Flamethrower   WC ID 607: 「Salazzle is ready for battle」's receiving text  0x2C Thank you for playing Pokémon! Please pick up your gift from the deliveryman in any Pokémon Center. Salazzle is ready for battle This venomous Poison- and Fire-type
Pokémon Salazzle has its signature
Corrosion Ability, which enables it to
make even usually resistant Steel- and
Poison-type Pokémon badly poisoned
using its potent Toxic move!

On March 12th, 2017, a testing wonder card for Lycanroc (for the US Serial code) was first uploaded to the Mystery Gift servers,
and was removed as quickly as it came.

On April 9th, 2017, an image popped up, showing the US version of a Code card. (also in screenshot section above).

EU event starts on May 05, and US event starts on May 15 (uploaded early on May 13).
The actual Event differs from this Early testing card, only by Trainer ID.

Data as follows:
 Species   Lycanroc (Midnight)   Nickname   (default, save lang)   OT   Rocky   TID   005157   Distribution   Serial Code   Location   a lovely place   Dates   Not Released   PID   Cannot Be Shiny   Games   US: SM    Lv. 50      Nature   Random   Ability   No Guard (HA)   Item   Life Orb   Bundled Item   None 
Classic   Moves   (ITALIC means Relearnable)   Stone Edge   Fire Fang   Sucker Punch   Swords Dance   WC ID 606: 「Lycanroc will not miss!」's receiving text  0x2C Thank you for playing Pokémon! Please pick up your gift from the deliveryman in any Pokémon Center. Lycanroc will not miss! Opponents cannot hide from the
Rock-type Pokémon Lycanroc!
Its No Guard Ability makes sure
hard-hitting moves such as Stone Edge
and Fire Fang will not miss.

On September 07th, 2017, around 09:12 GMT, a Marshadow test card was uploaded for testing, and quickly removed.
As per previous tests, it was likely to test if the the Serial Codes they have on hand can retrieve the card from the correct Wonder Card ID slot.

As per similar style as the recent Charizard combination cards, this card is fused with Ilex's Celebi event.
Here's the few things that is wrong/notable about this card:
1. For one of the Marshadow, it instead uses English Silvally's Wonder card ID.
2. Despite using English Silvally's Wonder Card ID, most of its details is from the Japanese Ilex's Celebi event.
3. Despite using Japanese Ilex's Celebi's details, it uses the English OT Ilex, as opposed to the original Japanese OT.

Editior's note: apparently, even the testing staff is excited for Marshadow!

Internal Name: 0626_Marshadow_test
 Species   Marshadow   Nickname   (default, save lang)   OT   Ilex   TID   112199   Distribution   None   Location   the Johto region   Dates   Unreleased   PID   Cannot Be Shiny   Games   SM USUM    Lv. 30                                                                  Nature   Random   Ability   Technician (1)   Item   None   Bundled Item   None 

Souvenir   Moves   (ITALIC means Relearnable)   Heal Bell   Safeguard   Ancient Power   Future Sight  「MARSHADOW」's receiving text 0x2C Thank you for playing Pokémon! Please pick up your gift from the deliveryman in any Pokémon Center. MARSHADOW MAAARSHADOW! Format Ver.1.0.5-3, Post Updated Date:20171012_1742

This gift was distributed in Toys "R" Us stores across the United States, distributed to commemorate the release of M08: Lucario and the Mystery of Mew.
It has been determined that 430 MYSTRY MEWs existed, though only 426 was used, and 4 were not available.
This extra 4 was created due to how the distribution procedure (when transferring to the save used by TRU) has to create 5 Mew at a time.
However, as the save maxed out on capacity, 4 MEWs, and 1 starter, was traded away.
This page holds the 4 MYSTRY MEW that were unavailable to players.
 
Additionally, besides the standard in-game trade Farfetch'd, every Pokémon found in the Hall of Fame of the MYSTRY Mew save has been dutifully recreated and added to here.
Recreation is based on PID, which can be used to infer the Pokémon's Nature, IVs, and even encounter slot.
Based on the data, besides Blastoise, based on encounter slot data derived from their PID,
it appears that the level shown in the Hall of Fame entries is the level they were caught at, meaning they weren't even leveled up.
Their likely use, was to be placeholder fodder, to take the brunt of attacks, while the player revives their Blastoise.
 
Read more here about the 430 Mew here:
 

This gift was distributed in Toys "R" Us stores across the United States, distributed to commemorate the release of M08: Lucario and the Mystery of Mew.
It has been determined that 430 MYSTRY MEWs existed, though only 426 was used, and 4 were not available.
This extra 4 was created due to how the distribution procedure (when transferring to the save used by TRU) has to create 5 Mew at a time.
This page holds the MYSTRY MEW that was available to players.

Read more here:
 

Out there in the wild, exists a German Language Debugger's/Developer's Edition of Pokemon Ruby Version,
which contains many debugging tools, including Mystery Event distribution subroutines.
Working on the data first documented by The Cutting Room Floor and GlitchCity Forums,
the E-card Trainer was finally extracted by @jojo12100 using @suloku's tool.

There are e-Reader cards that allow you to challenge trainers in the old man's house in Mossdeep City,
and the trainer can be swapped out by scanning a different card.

This card data contains a trainer that is a Pokemon Ranger, with his name being "Card E" (Japanese: カードいイー),
and rather peculiarly have the names of his Pokemon being in English ("TOURNAMENT").
Note: Japanese games are hard coded to only display up to 5 Characters for Trainer and Pokemon Names,
even if the Pokemon has a longer name, as seen in the comparison below.

It's possible that this e-Card was originally Japanese in a earlier revision of the debug rom,
which was likely based on a japanese debug rom, before it was adapted for localization.
The nicknames of the Pokemon was likely changed during localization.

[We will not distribute the Debug Ruby Rom, and it is against our rules to ask for it]
 
Original Thread:

In Pokemon Omega Ruby & Alpha Sapphire, players will receive a Cosplay Pikachu, after taking part in a Pokemon Contest Spectacular.
The Cosplay Pikachu comes with it's Hidden Ability Lightning Rod, and an exclusive move that changes with the costume.
Cosplay Pikachu normally cannot be obtained shiny in-game.

Through the power of hacking, theSLAYER obtained a few Cosplay Pikachu that are different from normal.
1. Shininess + Hidden Ability (Lightning Rod)
2. Shininess + Ability Slot 1 (Static)
[these were obtained by changing TID/SID of the Pokemon, to make it shiny. Also, ability changed for non-HA versions]

It's normally impossible to obtain more than one Cosplay Pikachu, and like Spiky-Eared Pikachu,
it cannot be traded (or deposited into Pokemon Bank), and cannot be transferred to future generations.

Pokémon Sun & Moon introduced a variant Pikachu that wear's Ash's Hat (Cap Pikachu) AND
Let's Go Pikachu introduced a variant that is your buddy (Partner Pikachu),
and it's interesting to note they removed shiny coloration for the alternate model that fills the shiny slot,
meaning that Cosplay Pikachu may be the last Pikachu Variant that have Shiny Models, even when shiny locked.

This gift was distributed to players via Local Wireless, to players that went to the site of the Korean League, at Hanwha Galleria Foret G Floor, 32-14 Seoul Forest, Seongdong-gu, Seoul.
Players with Ultra Sun received Zekrom, and players with Ultra Moon received Reshiram.
     Species   Reshiram   Nickname   (default, save lang)   OT   코리안리그   TID   190608   Distribution   Local Wireless   Location   a lovely place   Dates   Jun 08 to Jun 09, 2019   PID   Cannot Be Shiny   Games   All Regions 3DS: UM                                                                Lv. 100    Nature   Random   Ability   Turboblaze (1)   Item   Gold Bottle Cap   Bundled Item   None   Card Per Save   Only One Allowed    Moves   (ITALIC means Relearnable)   Fusion Flare   Blue Flare   Draco Meteor   Earth Power   WC ID 1155: 「백양포켓몬 레시라무 선물!」's receiving text 0x2B Thank you for coming to the Pokémon event! Please pick up your gift from the deliveryman in any Pokémon Center.

Classic 백양포켓몬 레시라무 선물! 2018-19 코리안리그 파이널 시즌
개최를 기념하여
백양포켓몬 레시라무를 선물합니다! Format Ver.1.0.8-2, Post Updated Date:20190615_1626

This gift was distributed to players via Local Wireless, to players that went to the site of the Korean League, at Hanwha Galleria Foret G Floor, 32-14 Seoul Forest, Seongdong-gu, Seoul.
Players with Ultra Sun received Zekrom, and players with Ultra Moon received Reshiram.
     Species   Zekrom   Nickname   (default, save lang)   OT   코리안리그   TID   190608   Distribution   Local Wireless   Location   a lovely place   Dates   Jun 08 to Jun 09, 2019   PID   Cannot Be Shiny   Games   All Regions 3DS: US                                                                Lv. 100    Nature   Random   Ability   Teravolt (1)   Item   Gold Bottle Cap   Bundled Item   None   Card Per Save   Only One Allowed    Moves   (ITALIC means Relearnable)   Fusion Bolt   Bolt Strike   Outrage   Stone Edge   WC ID 1155: 「흑음포켓몬 제크로무 선물!」's receiving text 0x2B Thank you for coming to the Pokémon event! Please pick up your gift from the deliveryman in any Pokémon Center.

Classic 흑음포켓몬 제크로무 선물! 2018-19 코리안리그 파이널 시즌
개최를 기념하여
흑음포켓몬 제크로무를 선물합니다! Format Ver.1.0.8-2, Post Updated Date:20190613_1322

This gift was given away to participants of the 2019 International Challenge (May), which battles were held between May 24th to May 26th.

For this competition, participants were required to take part in at least 3 battles of the Online Competition, with a game synced game and account.
As this Online Competition was only available to Ultra Sun and Ultra Moon, the gift is also only receivable on Ultra Sun and Ultra Moon.
   Species   Tapu Fini   Nickname   (default, save lang)   OT   Poni   TID   190524   Distribution   Serial Code   Location   the PGL   Dates   Jun 11 to Jul 30, 2019   PID   Shiny PID   Games   All Regions 3DS: USUM                                                                Lv. 60    Nature   Random   Ability   Misty Surge (1)   Item   Misty Seed   Bundled Item   None   Card Per Save   Only One Allowed    Moves   (ITALIC means Relearnable)   Nature's Madness   Muddy Water   Aqua Ring   Hydro Pump   WC ID 1635: 「Shiny Tapu Fini gift」's receiving text 0x38 This is a gift from the Pokémon Global Link! Please pick up your gift from the deliveryman in any Pokémon Center.

Classic Shiny Tapu Fini gift Here is your reward for your
participation in the recent
Online Competition!
Enjoy this rare Shiny Tapu Fini! Format Ver.1.0.8-2, Post Updated Date:20190615_1505

This gift was given away to participants  (JP 3DS only) of the Japan Championships 2019 (Qualifying Round), which battles were held between April 19th to April 22nd. This gift was also given away to participants of the 2019 International Challenge (May), which battles were held between May 24th to May 26th.

For both competitions, participants were required to take part in at least 3 battles of the Online Competition, with a game synced game and account.
As this Online Competition was only available to Ultra Sun and Ultra Moon, the gift is also only receivable on Ultra Sun and Ultra Moon.

While the codes (prefix J) from Japan Championships 2019 (Qualifying Round) can only redeem this Japanese card,
codes from International Challenge (prefix F) can redeem any language card (based on region, as usual), including this one.

Dates for the distribution are as follows:
UTC 05/21/2019 04:00 AM - 06/27/2019 11:59 PM - Japan Championships 2019 (Qualifying Round)
UTC 06/11/2019 04:00 AM - 07/30/2019 11:59 PM - 2019 International Challenge (May)
   Species   Tapu Fini   Nickname   (default, save lang)   OT   ポニ   TID   190419   Distribution   Serial Code   Location   the PGL   Dates   Various   PID   Shiny PID   Games   All Regions 3DS: USUM                                                                Lv. 60    Nature   Random   Ability   Misty Surge (1)   Item   Misty Seed   Bundled Item   None   Card Per Save   Only One Allowed    Moves   (ITALIC means Relearnable)   Nature's Madness   Muddy Water   Aqua Ring   Hydro Pump   WC ID 1635: 「いろちがいの　カプ・レヒレ　プレゼント」's receiving text 0x38 This is a gift from the Pokémon Global Link! Please pick up your gift from the deliveryman in any Pokémon Center.

Classic いろちがいの　カプ・レヒレ　プレゼント インターネットたいかい　さんかきねんに
めずらしい　いろちがいの　カプ・レヒレを
プレゼント！ Format Ver.1.0.8-2, Post Updated Date:20190521_1758

This gift was distributed to players via Local Wireless, to players that went to the site of the Korean League, at the Dongdaemun Design Plaza.

Players with Ultra Sun received Entei, and players with Ultra Moon received Raikou.
     Species   Raikou   Nickname   (default, save lang)   OT   코리안리그   TID   181222   Distribution   Local Wireless   Location   a lovely place   Dates   Dec 22 to Dec 23, 2018   PID   Cannot Be Shiny   Games   All Regions 3DS: UM                                                                Lv. 100    Nature   Random   Ability   Pressure (1)   Item   Gold Bottle Cap   Bundled Item   None   Card Per Save   Only One Allowed    Moves   (ITALIC means Relearnable)   Thunderbolt   Volt Switch   Extrasensory   Calm Mind   WC ID 1151: 「우뢰포켓몬 라이코 선물!」's receiving text 0x2B Thank you for coming to the Pokémon event! Please pick up your gift from the deliveryman in any Pokémon Center.

Classic 우뢰포켓몬 라이코 선물! 2018-19 코리안리그 S1 개최를 기념하여
우뢰포켓몬 라이코를 선물합니다! Format Ver.1.0.6-3, Post Updated Date:20181223_1652

This gift was distributed to players via Local Wireless, to players that went to the site of the Korean League, at the Dongdaemun Design Plaza.

Players with Ultra Sun received Entei, and players with Ultra Moon received Raikou.
     Species   Entei   Nickname   (default, save lang)   OT   코리안리그   TID   181222   Distribution   Local Wireless   Location   a lovely place   Dates   Dec 22 to Dec 23, 2018   PID   Cannot Be Shiny   Games   All Regions 3DS: US                                                                Lv. 100    Nature   Random   Ability   Pressure (1)   Item   Gold Bottle Cap   Bundled Item   None   Card Per Save   Only One Allowed    Moves   (ITALIC means Relearnable)   Sacred Fire   Stone Edge   Iron Head   Flame Charge   WC ID 1151: 「화산포켓몬 앤테이 선물!」's receiving text 0x2B Thank you for coming to the Pokémon event! Please pick up your gift from the deliveryman in any Pokémon Center.

Classic 화산포켓몬 앤테이 선물! 2018-19 코리안리그 S1 개최를 기념하여
화산포켓몬 앤테이를 선물합니다! Format Ver.1.0.6-3, Post Updated Date:20181223_1654

This gift was distributed to players via Local Wireless, to players that went to the site of the Korean League, at the Dongdaemun Design Plaza.

Players with Ultra Sun received Thundurus, and players with Ultra Moon received Tornadus.
     Species   Incarnate Tornadus   Nickname   (default, save lang)   OT   코리안리그   TID   190216   Distribution   Local Wireless   Location   a lovely place   Dates   Feb 16 to Feb 17, 2019   PID   Cannot Be Shiny   Games   All Regions 3DS: UM                                                                Lv. 100    Nature   Random   Ability   Prankster (1)   Item   Gold Bottle Cap   Bundled Item   None   Card Per Save   Only One Allowed    Moves   (ITALIC means Relearnable)   Hurricane   Heat Wave   Grass Knot   Tailwind   WC ID 1152: 「선풍포켓몬 토네로스 선물!」's receiving text 0x2B Thank you for coming to the Pokémon event! Please pick up your gift from the deliveryman in any Pokémon Center.

Classic 선풍포켓몬 토네로스 선물! 2018-19 코리안리그 S2 개최를 기념하여
선풍포켓몬 토네로스를 선물합니다! Format Ver.1.0.7-0, Post Updated Date:20190217_1216

This gift was distributed to players via Local Wireless, to players that went to the site of the Korean League, at the Dongdaemun Design Plaza.

Players with Ultra Sun received Thundurus, and players with Ultra Moon received Tornadus.
     Species   Incarnate Thundurus   Nickname   (default, save lang)   OT   코리안리그   TID   190216   Distribution   Local Wireless   Location   a lovely place   Dates   Feb 16 to Feb 17, 2019   PID   Cannot Be Shiny   Games   All Regions 3DS: US                                                                Lv. 100    Nature   Random   Ability   Prankster (1)   Item   Gold Bottle Cap   Bundled Item   None   Card Per Save   Only One Allowed    Moves   (ITALIC means Relearnable)   Thunderbolt   Focus Blast   Grass Knot   Nasty Plot   WC ID 1152: 「뇌격포켓몬 볼트로스 선물!」's receiving text 0x2B Thank you for coming to the Pokémon event! Please pick up your gift from the deliveryman in any Pokémon Center.

Classic 뇌격포켓몬 볼트로스 선물! 2018-19 코리안리그 S2 개최를 기념하여
뇌격포켓몬 볼트로스를 선물합니다! Format Ver.1.0.7-0, Post Updated Date:20190217_1218

This gift was given away to participants of the 2019 International Challenge (February).
Participants were required to take part in at least 3 battles of the Online Competition, with a game synced game and account.
As this Online Competition was only available to Ultra Sun and Ultra Moon, the gift is also only receivable on Ultra Sun and Ultra Moon.
   Species   Tapu Bulu   Nickname   (default, save lang)   OT   울라울라   TID   190222   Distribution   Serial Code   Location   the PGL   Dates   Mar 19 to Apr 30, 2019   PID   Shiny PID   Games   KO 3DS: USUM                                                                Lv. 60    Nature   Random   Ability   Grassy Surge (1)   Item   Grassy Seed   Bundled Item   None   Card Per Save   Only One Allowed    Moves   (ITALIC means Relearnable)   Nature's Madness   Zen Headbutt   Megahorn   Skull Bash   WC ID 1634: 「색이 다른 카푸브루루 선물」's receiving text 0x38 This is a gift from the Pokémon Global Link! Please pick up your gift from the deliveryman in any Pokémon Center.

Classic 색이 다른 카푸브루루 선물 인터넷 대회 참가 기념으로
희귀한 색이 다른 카푸브루루를
선물합니다! Format Ver.1.0.7-0, Post Updated Date:20190320_0003

This gift was distributed to players via Local Wireless, to players that went to the site of the Korean League, at the Seouliteum.
Players with Ultra Sun received Latias, and players with Ultra Moon received Latios.
     Species   Latios   Nickname   (default, save lang)   OT   코리안리그   TID   190504   Distribution   Local Wireless   Location   a lovely place   Dates   May 04 to May 05, 2019   PID   Cannot Be Shiny   Games   All Regions 3DS: UM                                                                Lv. 100    Nature   Random   Ability   Levitate (1)   Item   Gold Bottle Cap   Bundled Item   None   Card Per Save   Only One Allowed    Moves   (ITALIC means Relearnable)   Luster Purge   Psychic   Draco Meteor   Tailwind   WC ID 1154: 「무한포켓몬 라티오스 선물!」's receiving text 0x2B Thank you for coming to the Pokémon event! Please pick up your gift from the deliveryman in any Pokémon Center.

Classic 무한포켓몬 라티오스 선물! 2018-19 코리안리그 S3 개최를 기념하여
무한포켓몬 라티오스를 선물합니다! Format Ver.1.0.8-0, Post Updated Date:20190505_1337

This gift was distributed to players via Local Wireless, to players that went to the site of the Korean League, at the Seouliteum.
Players with Ultra Sun received Latias, and players with Ultra Moon received Latios.
     Species   Latias   Nickname   (default, save lang)   OT   코리안리그   TID   190504   Distribution   Local Wireless   Location   a lovely place   Dates   May 04 to May 05, 2019   PID   Cannot Be Shiny   Games   All Regions 3DS: US                                                                Lv. 100    Nature   Random   Ability   Levitate (1)   Item   Gold Bottle Cap   Bundled Item   None   Card Per Save   Only One Allowed    Moves   (ITALIC means Relearnable)   Mist Ball   Psychic   Draco Meteor   Tailwind   WC ID 1154: 「무한포켓몬 라티아스 선물!」's receiving text 0x2B Thank you for coming to the Pokémon event! Please pick up your gift from the deliveryman in any Pokémon Center.

Classic 무한포켓몬 라티아스 선물! 2018-19 코리안리그 S3 개최를 기념하여
무한포켓몬 라티아스를 선물합니다! Format Ver.1.0.8-0, Post Updated Date:20190505_1333

This gift was distributed at Pokémon Japan Championships 2019, and it was based on the Nidoqueen used by the previous year's champion.

All IVs are at 31, except Attack IV which has a value of 5.
It also comes with set EVs, which are: HP - 12, Attack - 0, Defense - 4, Special Attack - 252, Special Defense - 0, Speed - 236.
     Species   Nidoqueen   Nickname   (default, in )   OT   てんさいピィ   TID   190608   Distribution   Local Wireless   Location   Paniola Ranch   Dates   Jun 08 to Jun 09, 2019   PID   Cannot Be Shiny   Games   All Regions 3DS: SM USUM                                                                Lv. 50     Met Lv. 1    Nature   Timid   Ability   Sheer Force (HA)   Item   Life Orb   Bundled Item   None   Card Per Save   Only One Allowed    Moves   (ITALIC means Relearnable)   Protect   Sludge Bomb   Ice Beam   Earth Power   WC ID 302: 「PJCS2018チャンピオンの　ニドクイン」's receiving text 0x2E Thank you for participating in the Battle Competition! Please pick up your gift from the deliveryman in any Pokémon Center.

Battle Champ PJCS2018チャンピオンの　ニドクイン PJCS2019への　らいじょう　きねんに
きょねんの　マスターカテゴリ
チャンピオンの　ニドクインを
プレゼント！ Format Ver.1.0.8-2, Post Updated Date:20190608_2055

In Pokémon FireRed, LeafGreen & Emerald, lies a cave named the Altering Cave.
At first glance, all it has are wild Zubat, which makes me people ask "why the heck does this cave even exist to begin with".
As it turns out, there is more to this cave than it meets the eye.
This cave was programmed to make use of special Mystery Gifts, that would allow the wild Pokémon species that appears to be altered.
Sadly, this game feature never had an event to make use of it.

Following it's initial release in Pokémon FireRed & LeafGreen, all the Pokémon that could have been caught from here,
could also be encountered in the extended Safari Zone of Pokémon Emerald.
(with the exception of Smeargle: it can be caught in Artisan cave in Battle Frontier)
Despite these Pokémon all being available in Pokémon Emerald, it's not known why this cave was also included for it.
This page hosts the Pokémon that can be encountered in an altered Altering Cave, as well as other means to get them to appear.
 
New update!
This page also holds a custom wonder card, that can be used to cycle through the encounters of Altering Cave, whenever you talk to the deliveryman!
Take note: if you toss/remove the wonder card, the encounters in Altering Cave will be stuck at the last species encountered.
Also note: FireRed/LeafGreen & Emerald have their own wonder cards. FRLG cannot use Emerald wonder card and vice versa.

The encounters that get cycled are (and it wraps back to the start):
Zubat, Mareep, Pineco, Houndour, Teddiursa, Aipom, Shuckle, Stantler, Smeargle.
International
Wonder Card
(ENG FRE GER ITA SPA)
Card is English language,
but works on the
languages listed.
Japanese
Wonder Card (Hint: You'll need the WC3TOOL to inject wonder cards into your save.)

Also, PKHeX usage:
Pokémon FireRed and LeafGreen: Event constant 36
Pokémon Emerald: Event constant 62

Cycling through 0 to 8 in the above given event constant, results in the rotation of the species that appears.

Also, for cheat code usage:
Pokémon FireRed and LeafGreen:
Pokémon Emerald Codes:

Credits to the Pokémon: @HaxAras
Credits to codes: @BlackShark

Original Post:

Back in September 25, 2004, the toys retailer TOYS "Я" US in United States had a single day event, where some Pokémon were distributed to players.

These following mons were known to be distributed (red means missing):


Like the MYSTRY Mew distribution, it appears that the distribution across the stores used the same cloned save, and were distributed to players via trade.
Some of the mons in this archive came from LordHuffnPuff.
In this archive, most of the files are .pk3. Also important to note that Machoke & Haunter was received as a Machamp & Gengar respectively, since it was distributed by trade and it wasn't holding an Everstone.
Devolved Machoke & Haunter was added, as it was potentially possible for the player to request for a double trade (to send over an Everstone), and getting the staff to help them attach it to Machoke/Haunter, as unlikely as that may be.

The .pk4 format entries were removed, as they were potentially faked.

With the release of Pokémon Crystal to 3DS's Virtual Console, it became possible for players to encounter the Mythical Pokémon Celebi and transfer it up to Generation VII.

Similar to the Mew event distributed to Virtual Console of Pokémon Red, Green, Blue and Yellow,
the Celebi will have a minimum of 5 perfect IVs. As a result, this limits the type of Hidden Power it can have, to namely Dark, Dragon, Electric, Steel or Ice.
As Pokémon Crystal was not released to the Korean 3DS, it is not possible for a legal Korean-language Celebi of Virtual Console origin to exist. (Though important to note, as of present, PokeTransporter allows it to be transported up)

The details below relate to the encounter, not the file itself.
Note: As per any Virtual Console transfer, the origin game of the Pokémon is set to the game it was transferred from,
not the game it was caught in.
     Species   Celebi   Nickname   (default, save lang)   OT   (recipient)   TID   (recipient)   Distribution   In-Game Encounter   Location   the Johto region   Dates   (Various)   PID   Chance of Shiny   Games   VC Crystal                                                                Lv. 30    Nature   Random   Ability   Natural Cure (1)   Item   None    Moves   (ITALIC means Relearnable)   Heal Bell   Safeguard   Ancient Power   Future Sight
  Format Ver.1.0.6-1, Post Updated Date:20180126_2313

After becoming Champion for the first time, the player gets to receive a Type: Null.

For Pokémon Sun & Moon, the player receives the Type: Null as a gift from Gladion at Aether Paradise.
For Pokémon Ultra Sun & Ultra Moon, Wicke will give the player a Type: Null entrusted to you from Gladion, at the Ancient Poni Path.

This gift has a chance of being shiny. Details below refer specifically to this file.
     Species   Type: Null   Nickname   (default, in )   OT   PPorg   TID   181116   Distribution   In-Game Encounter   Location   Aether Paradise   Dates   Nov 18, 2017   PID   Cannot Be Shiny   Games   Sun                                                                Lv. 40    Nature   Timid   Ability   Battle Armor (1)   Item   None    Moves   (ITALIC means Relearnable)   Crush Claw   Scary Face   X-Scissor   Take Down

   (no ribbons) Format Ver.1.0.7-0, Post Updated Date:20190330_1911
 Species   Type: Null   Nickname   (default, in )   OT   PPorg   TID   171117   Distribution   In-Game Gift   Location   Ancient Poni Path   Dates   Nov 18, 2017   PID   Cannot Be Shiny   Games   Ultra Moon    Lv. 60                                                                  Nature   Naive   Ability   Battle Armor (2)   Item   None 
    Moves   (ITALIC means Relearnable)   Metal Sound   Iron Head   Double Hit   Air Slash Format Ver.1.0.5-5, Post Updated Date:20171129_1934

This gift was programmed in the game to be shiny locked. However, due to a programming oversight,
it is possible to receive the Partner Cap Pikachu as shiny (standard odds),
if your Trainer Shiny Value (TSV) is not 1009. This is the only Pikachu Cap Variant that can be received shiny.
(Note: Still available shiny, up to update Version 1.2)

How the game mechanic worked, was that the game would generate a PID that is not shiny compared to your TID/SID.
After that generation, the game will proceed to overwrite the Pikachu's TID/SID with Ash's.
Hence, there is a chance that the PID generated for the Pikachu will be shiny against TID/SID of Ash, as the game doesn't check for that.

This was discovered by @wwwwwwzx when reviewing the game's code, who then went ahead to test and prove it with RNG.
A few other users also corroborated the data with their own findings.

The data below refers to the file itself, not the encounter as a whole.
   Species   Pikachu (Partner Cap)   Nickname   (default, in )   OT   Ash   TID   170715   Distribution   In-Game Gift   Location   2017 Pokémon Movie   Dates   (various dates)   PID   Shiny PID   Games   Ultra Moon 
(and Ultra Sun)                                                                Lv. 21    Nature   Hardy   Ability   Static (1)   Item   Pretty Wing    Moves   (ITALIC means Relearnable)   Thunderbolt   Quick Attack   Thunder   Iron Tail

Wishing Format Ver.1.0.6-1, Post Updated Date:20180207_2340

Out there in the wild, exists a German Language Debugger's/Developer's Edition of Pokemon Ruby Version,
which contains many debugging tools, including Mystery Event distribution subroutines.
Using the Mimic e-Card option in the Test Menu, the game emulates receiving an Eon Ticket,
which is notably different from the standard one players get from an official distribution.
[We will not distribute the Debug Ruby Rom, and it is against our rules to ask for it]