theSLAYER

This event was distributed to commemorate the Japanese Cinematic release of Pokemon the Movie 20: I Choose You!
Serial codes for this event were being given away for pre-ordering the movie tickets, and another Pikachu can be redeemed if you have another code.
These serial codes are region locked to Japan 3DSes only.
 
 Species   Pikachu (Unova Cap)   Nickname   (default, save lang)   OT   サトシ   TID   100923   Distribution   Serial Code   Location   2017 Pokémon Movie   Dates   May 31 - Jun 12, 2017 
Aug 30 - Sep 11, 2017   PID   Cannot Be Shiny   Games   JP 3DS: SM    Lv. 14                                                                  Nature   Hardy   Ability   Static (1)   Item   None   Bundled Item   Pikashunium Z   Card Per Save   Multiples Allowed 

Wishing   Moves   (ITALIC means Relearnable)   Thunderbolt   Quick Attack   Iron Tail   Volt Tackle   WC ID 223: 「サトシのピカチュウ（イッシュキャップ）」's receiving text 0x03 Thank you for coming to see the 2017 Pokémon Movie! Please pick up your gift from the deliveryman in any Pokémon Center. サトシのピカチュウ（イッシュキャップ） イッシュちほうに　おりたった　そのひ
でんせつの　ポケモンの　かげを　みる
サトシと　ピカチュウ
すこしの　ふあんと
かぞえきれない　たのしみを　むねに
だいぼうけんを　くりひろげる！ Format Ver.1.0.5-4, Post Updated Date:20171105_1711

Distributions of the same event:
           

This event was distributed to players as an egg, at New York Pokemon Center.
 
 Species   Chansey (EGG)   Nickname   (default, save lang)   OT   (recipient)   TID   (recipient)   Distribution   PCNY   Location   (fateful encounter)   Dates   Dec 16, 2004 
to Jan 02, 2005   PID   Chance of Shiny   Games   FR LG    Lv. 5      Nature   Timid    Ability   Serene Grace (2)   Item   None      Moves       Sweet Scent   Wish   (None)   (None)

Tohoku Victini
This Victini was distributed the Tohoku Pokémon Center to celebrate the first anniversary its opening. It was also distributed at Pokémon Happy Christmas events in Fukushima and Iwate.
Wondercard ID 125 PID Random Games BW B2W2 Type Local Wireless Dates 11.25.2012-01.06.2013 Nickname ビクティニ Gender Genderless Level 100 Nature Random Ability Victory Star OT トウホク SID 00000 Location Lovely place Ribbon Classic Ribbon Ball Cherish Ball Held Item Soothe Bell Moves V-create Blue Flare Bolt Strike Glaciate

This Pokemon was distributed via Local Wireless to the participants of the Pokémon North American International Championship 2017 held in Indianapolis.
Prior to this event, there was no information distributed, to indicate that this Pokemon would be given away.
 
 Species   Arcanine   Nickname   (default, save lang)   OT   NA Champs 17   TID   063017   Distribution   Local Wireless   Location   a lovely place   Dates   Jun 30 to Jul 02, 2017   PID   Cannot Be Shiny   Games   All Regions 3DS: SM    Lv. 50                                                                  Nature   Random   Ability   Intimidate (1)   Item   Leftovers   Bundled Item   None 
Event   Moves   (ITALIC means Relearnable)   Flare Blitz   Extreme Speed   Will-O-Wisp   Protect   WC ID 615: 「Heat up your battles with Arcanine!」's receiving text 0x2C Thank you for playing Pokémon! Please pick up your gift from the deliveryman in any Pokémon Center. Heat up your battles with Arcanine! Here's your chance to bring one of
the most intimidating Pokémon to
every fight!

This event was distributed to commemorate the Japanese Cinematic release of Pokemon the Movie 20: I Choose You!
Serial codes for this event were being given away for pre-ordering the movie tickets, and another Pikachu can be redeemed if you have another code.
These serial codes are region locked to Japan 3DSes only.
 
 Species   Pikachu (Kalos Cap)   Nickname   (default, save lang)   OT   サトシ   TID   131017   Distribution   Serial Code   Location   2017 Pokémon Movie   Dates   Jun 14 to Jun 26, 2017 
Sep 13 to Sep 25, 2017   PID   Cannot Be Shiny   Games   JP 3DS: SM    Lv. 17                                                                  Nature   Hardy   Ability   Static (1)   Item   None   Bundled Item   Pikashunium Z   Card Per Save   Multiples Allowed 

Wishing   Moves   (ITALIC means Relearnable)   Thunderbolt   Quick Attack   Iron Tail   Electro Ball   WC ID 223: 「サトシのピカチュウ（カロスキャップ）」's receiving text 0x03 Thank you for coming to see the 2017 Pokémon Movie! Please pick up your gift from the deliveryman in any Pokémon Center. サトシのピカチュウ（カロスキャップ） ポケモンの　さらなる　しんか　
メガシンカの　なぞが　うずまく
カロスちほう
サトシと　ピカチュウは　いつか
かならず　かなえる　ゆめの　ため
カロスリーグ　せいはを　めざす！ Format Ver.1.0.5-4, Post Updated Date:20171105_1713

Distributions of the same event:
           

This event was distributed by serial code, to commemorate the release of the Virtual Console versions of Pokemon Gold and Silver for the 3DS.
The serial code was obtainable by those who purchased either game, and it was redeemed from their Nintendo e-Shop receipt.
After September 21, 2018, the code will no longer be given out.

For a limited time, a different card was distributed only to Pokemon Ultra Sun & Ultra Moon, which only allowed One Card Per Save.
That was fixed on Nov 20th, 2017.
 Species   Celebi   Nickname   (default, save lang)   OT   ウバメ   TID   112199   Distribution   Serial Code   Location   the Johto region   Dates    SM Sep 22, 2017
USUM Nov 17, 2017
to Oct 31, 2018   PID   Cannot Be Shiny   Games   JP 3DS: SM  USUM   Lv. 30                                                                  Nature   Random   Ability   Natural Cure (1)   Item   None   Bundled Item   None   Card Per Save   Multiples Allowed 

Souvenir   Moves   (ITALIC means Relearnable)   Heal Bell   Safeguard   Ancient Power   Future Sight   WC ID 251: 「ときわたりポケモン　セレビィ」's receiving text 0x2C Thank you for playing Pokémon! Please pick up your gift from the deliveryman in any Pokémon Center. ときわたりポケモン　セレビィ 『ポケットモンスター 金・銀』を
ダウンロードしてくれて　ありがとう！
ウバメのもりに　まつられる　セレビィが
ときを　こえて　やってきた！ Format Ver.1.0.5-5, Post Updated Date:20171117_0201
 Species   Celebi   Nickname   (default, save lang)   OT   ウバメ   TID   112199   Distribution   Serial Code   Location   the Johto region   Dates   Nov 17 to Nov 20, 2017   PID   Cannot Be Shiny   Games   JP 3DS: USUM    Lv. 30                                                                  Nature   Random   Ability   Natural Cure (1)   Item   None   Bundled Item   None   Card Per Save   Only One Allowed 

Souvenir   Moves   (ITALIC means Relearnable)   Heal Bell   Safeguard   Ancient Power   Future Sight   WC ID 251: 「ときわたりポケモン　セレビィ」's receiving text 0x2C Thank you for playing Pokémon! Please pick up your gift from the deliveryman in any Pokémon Center. ときわたりポケモン　セレビィ 『ポケットモンスター 金・銀』を
ダウンロードしてくれて　ありがとう！
ウバメのもりに　まつられる　セレビィが
ときを　こえて　やってきた！ Format Ver.1.0.5-5, Post Updated Date:20171117_0202

This event was distributed to US players that purchased Pokemon X and Y from Walmart.
and the serial code bundled had Garchomp in Pokemon X and Scizor in Pokemon Y.

The serial codes itself wasn't locked to X or Y.
Distribution Title A powerful Scizor! Wondercard ID 502 PID Shiny Locked PID Games XY Type Serial Code Dates Nov 27, 2013 to,
Jun 30, 2014 Nickname (default) Gender Male Level 50 Nature Random Ability RND 1, 2 OT WINTER2013 TID 11153 Location a lovely place Ribbon Classic , Ball Cherish Ball Held Item Silver Powder Moves X-Scissor Night Slash Double Hit Iron Head Relearn
Moves (None) (None) (None) (None) Receiving Text 0x2C Thank you for coming to the store! Please pick up your gift from the delivery girl in any Pokémon Center.  

This Celebi is part of the year long distribution to commemorate the 20th Anniversary of Pokemon.
It was distributed as a Online Wireless Gift.
Distribution Title The Mythical Pokémon Celebi Wondercard ID 558     PID Cannot Be Shiny Games XYORAS Type Online Wi-Fi Dates March 1 to
24, 2016 Species Celebi Nickname (default) Gender Genderless Level 100 Nature Random Ability Natural Cure (1) OT GF TID 3016 Location a lovely place Ribbon Classic , Ball Cherish Ball Held Item None Moves Confusion Recover Heal Bell Safeguard Relearn
Moves Confusion Recover Heal Bell Safeguard Receiving Text 0x2B Thank you for playing Pokémon! Please pick up your gift from the delivery girl in any Pokémon Center. Distribution Text To celebrate 20 years of Pokémon,
you have received Celebi!
Celebi, which is known to be able to
travel through time, was originally
distributed to Pokémon Gold
and Pokémon Silver.  

Those who purchased the 20th Anniversary 2DS Bundle from Japan gets a serial code to redeem this event.
The serial code was also given away to those that purchased the Virtual Console versions of Pokemon Red, Green, Blue, or Yellow from e-Shop.
 
 Species   Mew   Nickname   (default, save lang)   OT   ゲーフリ   TID   22796   Distribution   Serial Code   Location   GAME FREAK   Dates   Feb 27, 2016 
to Mar 31, 2017   PID   Cannot Be Shiny   Games   JP 3DS: XYORAS    Lv. 5      Nature   Random   Ability   Synchronize (1)   Item   None 
Premier   Moves   (ITALIC means Relearnable)   Pound   (None)   (None)   (None)   WC ID 137: 「まぼろしのポケモン　ミュウ」's receiving text  0x52 This is a gift from GAME FREAK! Please pick up your gift from the delivery girl in any Pokémon Center. まぼろしのポケモン　ミュウ 『ポケットモンスター
赤・緑・青・ピカチュウ』を
ダウンロードしてくれて　ありがとう！
きよらかな　こころと
つよく　あいたい　という　きもちを　もつと
すがたを　あらわす　まぼろしのポケモン
ミュウを　プレゼント！

This event was distributed by CoroCoro as a Limited Serial Code Event.
A Charizard was chosen to be distributed, as it's described as CoroCoro No.1 Most Popular Pokemon.

It's interesting to note that the Trainer ID 565640, represents CoroCoro 40.
5 [Go] sounds like Co, and 6 [Roku] first syllable is Ro.
 
 Species   Charizard   Nickname   (default, save lang)   OT   コロコロ   TID   565640   Distribution   Serial Code   Location   a lovely place   Dates    Mar 15 to May 14, 2017   PID   Cannot Be Shiny   Games   JP 3DS: SM    Lv. 40                                                                  Nature   Jolly   Ability   Blaze (1)   Item   None   Bundled Item   None   Card Per Save   Only One Allowed 

Classic   Moves   (ITALIC means Relearnable)   Flare Blitz   Dragon Claw   Fly   Dragon Rage   WC ID 224: 「コロコロ40しゅうねん　リザードン」's receiving text 0x2C Thank you for playing Pokémon! Please pick up your gift from the deliveryman in any Pokémon Center. コロコロ40しゅうねん　リザードン コロコロコミックで
ずっと　だいかつやく　してきた
リザードンを　プレゼント！
バトルで　かつやくさせよう！ Format Ver.1.0.5-4, Post Updated Date:20171105_1537

This event was distributed to commemorate the Movie 20: Pokemon I Choose You release in South East Asian territories,
and was distributed to players with either 3DS of US or JP regions, via common serial code.
The common code was revealed to be PIKACHUM20.

* Despite being indicated as Multiples Allowed on the wonder card, server itself only allowed one redemption.
 
 Species   Pikachu (Original Cap)   Nickname   (default, save lang)   OT   Ash   TID   090898   Distribution   Serial Code   Location   2017 Pokémon Movie   Dates   Nov 10 to Nov 23, 2017   PID   Cannot Be Shiny   Games   US & JP 3DS: SM    Lv. 1                                                                  Nature   Hardy   Ability   Static (1)   Item   None   Bundled Item   Pikashunium Z   Card Per Save   Multiples Allowed* 

Wishing   Moves   (ITALIC means Relearnable)   Thunderbolt   Quick Attack   Thunder   Agility   WC ID 275: 「Ash's Pikachu (Original Cap)」's receiving text 0x03 Thank you for coming to see the 2017 Pokémon Movie! Please pick up your gift from the deliveryman in any Pokémon Center. Ash's Pikachu (Original Cap) Ash and Pikachu have been together
since their fateful encounter on
Ash's 10th birthday. Pikachu has been
at Ash's side since his first step toward
becoming a Pokémon Master! Format Ver.1.0.5-4, Post Updated Date:20171110_1557

Species   Tyranitar   Nickname   (default, save lang)   OT   ヤミらみこ   TID   03866   Distribution   Nintendo Zone   Location   Route 7   Dates   Nov 07 - Dec 06, 2015   PID   Shiny PID   Games   Given to: JP 3DS: ORAS 
Preset as: X                                                                Lv. 55     Met Lv. 1    Nature   Adamant   Ability   Sand Stream (1)   Item   Life Orb   Card Per Save   Only One Allowed    Moves   (ITALIC means Relearnable)   Crunch   Rock Slide   Low Kick   Protect   WC ID 130: 「チャンピオンの　バンギラス」's receiving text 0x07 Thank you for coming to the Pokémon Center! Please pick up your gift from the delivery girl in the game.

Battle Champ チャンピオンの　バンギラス ポケモンWCS'15 ジュニアチャンピオンの
ポケモンを　プレゼント！
けっしょうせんで　かつやくした
いわなだれを　つかって
そのつよさを　たいけんしよう！ Format Ver.2.1.2-2, Post Updated Date:20210823_1608

This event was distributed to commemorate the Japanese Cinematic release of Pokemon the Movie 20: I Choose You!
Serial codes for this event were being given away for pre-ordering the movie tickets, and another Pikachu can be redeemed if you have another code.
These serial codes are region locked to Japan 3DSes only.
 
 Species   Pikachu (Alola Cap)   Nickname   (default, save lang)   OT   サトシ   TID   161117   Distribution   Serial Code   Location   2017 Pokémon Movie   Dates   Jun 28 to Jul 17, 2017 
Sep 27 to Oct 09, 2017   PID   Cannot Be Shiny   Games   JP 3DS: SM    Lv. 20                                                                  Nature   Hardy   Ability   Static (1)   Item   None   Bundled Item   Pikashunium Z   Card Per Save   Multiples Allowed 

Wishing   Moves   (ITALIC means Relearnable)   Thunderbolt   Quick Attack   Iron Tail   Electro Ball   WC ID 223: 「サトシのピカチュウ（アローラキャップ）」's receiving text 0x03 Thank you for coming to see the 2017 Pokémon Movie! Please pick up your gift from the deliveryman in any Pokémon Center. サトシのピカチュウ（アローラキャップ） アローラちほうで　ふたりを
まちうけていたのは　みたこともない
アローラの　ポケモンたち
そして　あついバトル！
サトシたちの　ゼンリョクだいぼうけんが
はじまる！
「ピカチュウ　キミにきめた！」 Format Ver.1.0.5-4, Post Updated Date:20171105_1716

Distributions of the same event:
           

Distributed locally to ORAS players to celebrate the opening of the Tokyo Skytree Town Pokemon Center.
     Species   Rayquaza   Nickname   (default, save lang)   OT   ポケセン   TID   07066   Distribution   Local Wireless   Location   a lovely place   Dates   Jul 05 to Sep 04, 2016   PID   Shiny PID   Games   All Regions 3DS: ORAS                                                                Lv. 100    Nature   Random   Ability   Air Lock (1)   Item   Comet Shard   Card Per Save   Only One Allowed    Moves   (ITALIC means Relearnable)   Dragon Ascent   Draco Meteor   Fly   Celebrate   WC ID 171: 「PCスカイツリータウン　オープンきねん」's receiving text 0x07 Thank you for coming to the Pokémon Center! Please pick up your gift from the delivery girl in the game.

Souvenir PCスカイツリータウン　オープンきねん ポケモンセンタースカイツリータウンの
オープンを　きねんして
いろちがいの　レックウザを　プレゼント！
ぜひ　あそびにきてね！ Format Ver.1.0.6-2, Post Updated Date:20180411_1623

Distribution Title Let's get started! Wondercard ID 591     PID Cannot Be Shiny Games ORAS Type Local Wi-Fi Dates Aug 19 -
21, 2016 Species Charmander Nickname (default) Gender Male Level 5 Nature Random Ability Solar Power (HA) OT WORLDS16 TID 8196 Location WCS 2016 Ribbon Event , Ball Cherish Ball Held Item Charizardite X Moves Scratch Growl Celebrate (None) Relearn
Moves Scratch Growl Celebrate (None) Receiving Text 0x19 Thank you for coming to the 2016 Pokémon World Championships! Please pick up your gift from the delivery girl in any Pokémon Center.  

The story behind this preservation effort is a pretty amazing one.

Before we go on, standard disclaimer:
THIS POKEMON WILL NOT BE LEGAL WITH ANY VIRTUAL CONSOLE RELEASE
(AND BY EXTENSION, CANNOT BE TRANSFERRED TO GEN 7 AND ONWARD).
However, that doesn't mean we can't enjoy playing these Pokemon in our games.
Now, it's time to for a trip down memory lane, fellow players.
In 1999 and 2000, @Tripred was able to obtain 14 Official Event Mews,
from the US Mall Tours for Pokemon Trading Card Game (1999) and Pokemon Stadium / Pokemon Movie (2000).

These are all legitimate Mews from Pokemon Mall events that happened in 1999 for the launch of the Pokemon TCG,
and then in 2000 for the Pokemon First Movie and Pokemon Stadium launch.

You would insert your Gen1 cartridge into a machine, while promo staff would fill out a paper "Certificate of Authenticity" for your personal Mew.
The Trainer names are LUIGE or LINKW.
The Trainer ID is generated sequentially from the Mew distribution machine.
The first Mew from a machine is 00001, the second 00002, 00003, so on.

The LUIGE Mews came from a Pokemon TCG event in 1999, where Tripred made friends with a Nintendo rep named Jeremy Hepworth.
He traded these two, numbers 00012 and 00014 to us.

The story as Tripred remember it was that the machines were scheduled to go on tour but had technical difficulties.
He had snagged these two (and the certificates of authenticity) during some testing runs.
The LINKW Mews came from a Summer 2000 Mall Event in Arlington, TX promoting Pokemon Stadium and the 2000 movie.
They had four of the machines running simultaneously for a huge line of people. Once the lines died off as Tripred went through the machines and got 12 of them.
@suloku wanted to know if Tripred remembered anything about the Mews, like trainer ID or stats.
He is documenting as much as he can about all of the different events and their Pokemon.
Luckily, what Tripred had for him is much, much better.

Back in the late 90's I worked for a KB ToyWorks store. 
Tripred's weekend duties included playing Pokemon TCG with kids, and promoting Pokemon in all ways.
Supported by Wizards of the Coast with tons of materials, it was a blast.
During that gig, Tripred ended up buying a save backup cart for his Game Boy, and started cloning these event Mews for the kids.

So when Suloko asked, I dug up all my Pokemon Red/Blue/Yellow carts and the save backup carts, and started pulling the Mews together. I
Tripred found six of them on a Blue save, and found another six sitting in Pokemon Stadium 1.
And the last two were in a box on Stadium 2. He was able to shuffle all of the Mews to one Stadium Cart, and through much trickery, get them onto a fresh Pokemon Yellow save.

Using a Retron 5, copied the save from the Pokemon Yellow cart onto my SD card.
(Tripred will post a youtube video with instructions on backing up cart saves using Retron 5 as a follow up, really neat way to preserve your retro saves)
Now Tripred gifts these Mews to Suloku, and to all of you.
Tripred hopes these Mews provide useful information, thank you for reading, and please let me know what kind of information or data you pull from the save!
Big thanks to tripred and suloku!

Read the original preservation article here,
and original thread:

This page hosts the shadow and purified versions of the Shadow Lugia obtained during the narrative of XD: Gale of Darkness.
More Colosseum and XD Pokémon can be found at this page.
 
Some images:

Back in the end of year 1999,
Toys "R" Us in the United States and Canada ran a lucky draw campaign,
via a peel sticker, that gave players a 1/5 chance of getting the Mew.
The first 1,500 winners (per country) that went for the redemption will be able to receive Mew on their copy of Pokemon Red, Blue or Yellow.
Around the same time frame, magazine Nintendo Power also did a giveaway to the first 1,000 applicants.
Various other information regarding this can be found here.

OT: YOSHIRA or YOSHIRB
TID: Random (00000 to 65535)
Lvl: 5
THIS POKEMON WILL NOT BE LEGAL WITH ANY VIRTUAL CONSOLE RELEASE
(AND BY EXTENSION, CANNOT BE TRANSFERRED TO GEN 7 AND ONWARD).

Original Thread:

This event was distributed to commemorate the Movie 20: Pokemon I Choose You release in Taiwan territories.
The serial code was distributed to players with 3DSes of either TW, EU or JP regions, when they pre-order the movie tickets.
 
 Species   Pikachu (Original Cap)   Nickname   (default, save lang)   OT   Satoshi   TID   970401   Distribution   Serial Code   Location   2017 Pokémon Movie   Dates   Oct 19 to Nov 23, 2017  PID   Cannot Be Shiny   Games   TW, EU & JP 3DS: SM    Lv. 1                                                                  Nature   Hardy   Ability   Static (1)   Item   None   Bundled Item   Pikashunium Z   Card Per Save   Multiples Allowed 

Wishing   Moves   (ITALIC means Relearnable)   Thunderbolt   Quick Attack   Thunder   Agility   WC ID 271: 「Satoshi's Pikachu (Original Cap)」's receiving text 0x03 Thank you for coming to see the 2017 Pokémon Movie! Please pick up your gift from the deliveryman in any Pokémon Center. Satoshi's Pikachu (Original Cap) Satoshi and Pikachu have been together
since their fateful encounter on
Satoshi's 10th birthday. Pikachu has been
at Satoshi's side since his first step toward
becoming a Pokémon Master! Format Ver.1.0.5-5, Post Updated Date:20171117_1938

The Pikachu Carnival Parade was held on Aug 14th, 2017, during the annual Pikachu Outbreak at Yokohama, Japan.
Besides Pikachu, Mimikyu and Ditto also crashed the parade, and were distributed to players via Local Wireless.
The 3 parade Pokemon can be received infinitely during the period of distribution.
Ditto and Mimikyu each have a 1/12 chance of being received, while Pikachu has a 10/12 chance of being received.
 
 Species   Ditto   Nickname   (default, save lang)   OT   カーニバル   TID   170814   Distribution   Local Wireless   Location   a 2017 Pokémon event   Dates   Aug 14, 2017   PID   Cannot Be Shiny   Games   All Regions 3DS: SM    Lv. 10                                                                  Nature   Random   Ability   Limber (1)   Item   Light Ball   Bundled Item   None   Card Per Save   Multiples Allowed 
    Moves   (ITALIC means Relearnable)   Transform   (None)   (None)   (None)   WC ID 250: 「ピカチュウ・カーニバル・パレード」's receiving text 0x2B Thank you for coming to the Pokémon event! Please pick up your gift from the deliveryman in any Pokémon Center. ピカチュウ・カーニバル・パレード しじょうさいだいの
ピカチュウの　パレードに
さんかしてくれた　きねんに
パレードに　とうじょうする
ポケモンを　プレゼント！ Format Ver.1.0.5-4, Post Updated Date:20171018_0154
 
        All   Pikachu Walk
Pikachu   Parade
Pikachu   Parade
Mimikyu   Parade
Ditto

This event is one out of two new Mega Evolving Pokemon distributed, Glalie International and Steelix Japan 3DS,
that is distributed to players for playing the Pokemon Omega Ruby and Alpha Sapphire Special Demo Version.

In the Special Demo, the Pokemon is encountered in a battle, with it's stats, nature, ability, and gender, fully randomized, as per any battle,
with the exception of it's Species, Level, and that it cannot be Shiny, being preset.
After capture, it can be nicknamed, and then can it be sent as a gift to the full versions of Pokemon Omega Ruby and Alpha Sapphire.

The language of the event is determined by the language of game save of the Special Demo Version,
so it's possible to receive a Pokemon with different Language of Origin from the save of the full versions of the game.
However, this Steelix can only be have Japanese as it's Language of Origin,
as only Japanese 3DS Special Demo Version can encounter this Steelix,
and the Special Demo Version for the Japanese Region does not have the language selection screen at the start of the Demo.
Even when not nicknamed in the Special Demo, this Pokemon will have it's Nickname Flag checked,
as long as the name it currently has is different from the default name of the species of the receiving game save's language.

The Trainer ID is randomly generated and assigned when starting the Special Demo,
and the Original Trainer will be Orlando ENG, FRE, GER, ITA, SPA or オメガ JPN or  오메가 KOR.
^ OT name languages refers to language of Special Demo, not Full versions.
Below shows the exact details of the contributed .PL6 and .PK6 file:
     Species   Steelix   Nickname   (default, save lang)   OT   オメガ   TID   29231   Distribution   Pokémon Link
(ORAS Demo)   Location   Pokémon Link   Dates   Oct 15, 2014 onwards   PID   Cannot Be Shiny   Games   Given to: JP 3DS: ORAS 
Preset as: AS                                                                Lv. 40    Nature   Random   Ability   Rock Head (1) or Sturdy (2)   Item   Steelixite   Card Per Save    -    Moves   (ITALIC means Relearnable)   Iron Tail   Crunch   Rock Slide   Screech   WC ID 0: 「Simulated Japanese ORAS Demo Steelix.」's receiving text 0x00 Thank you for coming to see the Pokémon Movie! Please pick up your gift from the delivery girl in any Pokémon Center.

   (no ribbons) Simulated Japanese ORAS Demo Steelix. Simulated Japanese ORAS Demo Steelix. Format Ver.2.1.2-2, Post Updated Date:20210823_1625
(The details were converted into a simulated file, which that file was then used as a HTML)

It was distributed in HKTW to celebrate the Chinese New Year,
and Infernape was chosen to be given as it is the "Year of the Monkey".
English Wonder Card was distributed to their JP and EU units.
 
 Species   Infernape   Nickname   (default, save lang)   OT   Jade   TID   01286   Distribution   Serial Code   Location   a lovely place   Dates   Jan 28 to Feb 29, 2016   PID   Cannot Be Shiny   Games   EU & JP 3DS: XYORAS    Lv. 88      Nature   Random   Ability   Iron Fist (HA)   Item   Nugget 
Classic   Moves   (ITALIC means Relearnable)   Fire Blast   Close Combat   Fire Punch   Focus Punch   WC ID 159: 「Year of Monkey Present "Infernape"」's receiving text  0x35 Thank you for receiving this distribution! Please pick up your gift from the delivery girl in any Pokémon Center. Year of Monkey Present "Infernape" Happy Lunar New Year! This Infernape
with a hidden ability is especially strong
in punching moves!
Let's use the two punching moves that
"Infernape" knows as soon as it joins you!

The Pikachu Carnival Parade was held on Aug 14th, 2017, during the annual Pikachu Outbreak at Yokohama, Japan.
Besides Pikachu, Mimikyu and Ditto also crashed the parade, and were distributed to players via Local Wireless.
The 3 parade Pokemon can be received infinitely during the period of distribution.
Ditto and Mimikyu each have a 1/12 chance of being received, while Pikachu has a 10/12 chance of being received.
 
 Species   Mimikyu (Disguised)   Nickname   (default, save lang)   OT   カーニバル   TID   170814   Distribution   Local Wireless   Location   a 2017 Pokémon event   Dates   Aug 14, 2017   PID   Cannot Be Shiny   Games   All Regions 3DS: SM    Lv. 10                                                                  Nature   Random   Ability   Disguise (1)   Item   None   Bundled Item   None   Card Per Save   Multiples Allowed 
    Moves   (ITALIC means Relearnable)   Copycat   Baby-Doll Eyes   Splash   Astonish   WC ID 250: 「ピカチュウ・カーニバル・パレード」's receiving text 0x2B Thank you for coming to the Pokémon event! Please pick up your gift from the deliveryman in any Pokémon Center. ピカチュウ・カーニバル・パレード しじょうさいだいの
ピカチュウの　パレードに
さんかしてくれた　きねんに
パレードに　とうじょうする
ポケモンを　プレゼント！ Format Ver.1.0.5-4, Post Updated Date:20171018_0156
 
        All   Pikachu Walk
Pikachu   Parade
Pikachu   Parade
Mimikyu   Parade
Ditto

This event was distributed to US players via Serial Code, to promote the Pokemon TCG: Roaring Skies blister pack sold at GameStop.
Distribution Title A battle-ready Dragonite! Wondercard ID 538     PID Cannot Be Shiny Games ORAS Type Serial Code Dates Jun 22 -
Oct 12, 2015 Species Dragonite Nickname (default) Gender Male/Female Level 55 Nature Random Ability Multiscale (HA) OT JUN2015 TID 6225 Location a lovely place Ribbon Classic , Ball Cherish Ball Held Item Lum Berry Moves Dragon Dance Outrage Hurricane Extreme Speed Relearn
Moves Extreme Speed (None) (None) (None) Receiving Text 0x2B Thank you for playing Pokémon! Please pick up your gift from the delivery girl in any Pokémon Center.  

Nobunaga's Black Rayquaza
This shiny, color-variant Rayquaza was distributed via Nintendo Wi-Fi Connection as well as through the Nintendo Zone, 3DS Stations, and at Pokémon Centers. It was distributed to promote Pokémon + Nobunaga's Ambition. It is based on Nobunaga's partner Pokémon from the game.
Wondercard ID 059 PID Random Games BW Type Wi-Fi / Local Dates 03.17.2012-04.16.2012 Nickname レックウザ Gender Genderless Level 70 Nature Random Ability Air Lock OT ノブナガ SID 00000 Location Faraway place Ribbon Classic Ribbon Ball Cherish Ball Held Item --- Moves Dragon Pulse Ancient Power Outrage Dragon Dance