Yasuo Oba - CEO, Producer - Apr 2023 (no games yet, formerly Namco)
Yudai Ishii - Game Director - Apr 2023 (no games yet, formerly Namco)
Takumi Kudo - Game Designer - Feb 2024 (formerly Toy Logic)

Once there he first bumps into an unnamed (hard to identify the developer) who points the host in the direction of the development team.

Then, we see 3 development staff from "R&D2" and Mario pop up.

Takashi Tezuka, Koji Kondo, and Kenji Miki

Out of the three, it is Kenji Miki who assumes the father of Mario and begins to answer questions about his origin to the host.

Mario's Father Japanese Video
Which leads to some questions:

1. Was R&D2 the official developer of Super Mario Bros. and the R&D4/EAD official group formalize shortly after?
2. Kenji Miki, who was a key development staff in early Nintendo but there was so much information missing on him — this would link him to being a core developer on Super Mario Bros.

• Recruitment, Jan 2016 - Nintendo (EPD Tokyo) places recruitment ad for level designers for an undefined 3D action game (with obvious 3D Mario universe hints).

- 2017

• Releases Super Mario Odyssey (NS1)
• EPD Tokyo simultaneously works on Captain Toad 3DS port. It seems like they asked NST to port the title for 3DS right after Mario Maker team asked them to port Mario Maker to 3DS.
• EPD Tokyo decides to also port Captain Toad to Switch mainly because of "how fun the co-op multiplayer feature" is on Odyssey. This straight port with one new level (New Donk City) looks like it was done in-house by a very small staff (2 Tokyo programmers) and a few Tokyo/1-UP planners and artists.

-2018

• Releases Captain Toad: Treasure Tracker (NS1, 3DS)
• Prototype team ("team banana") begins work on Donkey Kong (Leads: Yusakawa, Tanaka, Murata)
• Prototype team ("team mushroom") begins work on Bowser's Fury (Leads: Hiratake, Ando, Yoshida)
• NST works on DLC levels for Captain Toad: Treasure Tracker

-2018/2019?

• Technology / Port team begins work on 3D All-Stars (front end menu and porting Galaxy, some involvement with Sunshine) and 3D World (Hayashida, Matsuda, Kirihara, and Hishinuma [last game at EPD Tokyo before leaving]).

2019

• Recruitment, Oct 2019 - Nintendo (EPD Tokyo) places recruitment ad for level designers for an undefined 3D action game (with obvious 3D Mario universe hints).

2019/2020

• Bowser's Fury team ends work and brings in Nintendo Software Technology to finish a smaller concept version game from the WIP prototype.
• Donkey Kong team shifts some staff and faces some struggles?
• Releases Super Mario 3D All-Stars (NS1)

2020

• "Banana Team" continues working on 3D Donkey Kong
• "Mushroom Team" begins working on next concept of 3D Mario (post Bowser's Fury prototype)
• Recruitment, Aug 2020 - - Nintendo (EPD Tokyo) places recruitment ad for level designers for an undefined 2D action game (with obvious 2D Mario universe hints).

2021

• Releases Super Mario 3D World + Bowser's Fury (NS1)

2025

• Releases Donkey Kong: Bananza (NS2)

SmileBoom Co.Ltd. (2008-Present) (?? Employees)
Takaki Kobayashi - CEO
Miyuki Tanaka - Director
Kazuto Tokudome - Director
Nobuki Nagai - Director
Yasuki Toyosawa - Planner
Yoshikazu Hosoda - Program
Hidemasa Akimoto - Program
Hideki Horita - Program
Takashi Chiba - Program
Keita Abe - Program
Masami Kodaira - Graphics
Takanori Goto - Graphics
Megumi Fukushima - Graphics
Ryoichi Okayama - Graphics

Will Co., Ltd. (1998-Present) (93 Employees)
Hisao Hasunuma - Executive, Former Planner
Mitsuo Hasunuma - Executive, Former Planner
Hiroshi Kurimoto - Planner
Satoru Imamura - Planner
Noriyuki Saeki - Planner
Shigeyasu Ohashi - Planner
Junnosuke Tsuchimoto - Planner
Keiya Takashima - Planner
Ayumu Kawashiro - Planner
Hideki Izumi - Planner
Hisashi Kishida - Planner
Yamato Sato - Planner
Satomi Yamakawa - Planner
Ayane Taki - Planner
Yoshihisa Hayashi - Planner
Yuji Endo - Planner
Tatsuo Masuda - Manager
Takeshi Kawamoto - Program
Tsutomu Kawamoto - Program
Kazuyuki Makishima - Program
Kengo Matsumura - Program
Takanori Ohde - Program
Ryouhei Fukutome - Program
Shouto Nakamura - Program
Haruhiko Tanuma - Program
Kazuki Tashiro - Program
Masayuki Kino - Program
Tsubasa Yamaguchi - Program
Takuya Morioka - Program
Norihiro Hayashi - Program
Takahito Tatezawa - Graphic
Takahiro Asano - Graphic
Hirotaka Nakayama - Graphic
Noboru Matsumura - Graphic
Tadashi Miura - Graphic
Masayuki Tsuboi - Graphic
Shouichi Kawamura - Graphic
Risa Takei - Graphic
Yuka Kinoshita - Graphic
Senei Sou - Graphic
Shiori Teramoto - Graphic
Kenichi Ueyama - Graphic
Yuka Shimazaki - Graphic (Yuka Kinoshita married)
Shinichiro Shimamura - Graphic
Noboru Matsumura - Graphic
Tomoaki Watanabe - Graphic
Yumi Futagawa - Graphic
An Iizuka - Graphic
Ayumi Fujita - Graphic
Reiki Nishikawa - Graphic
Saki Matsuo - Graphic
Misa Kuwahara - Graphic

C.A. Productions Ltd. (1993-Present) (49 Employees)
Osamu Tsujikawa - Executive, Former Graphic
Makoto Eguchi - Planner, Former Graphic
Atsushi Nakao - Planner
Shigeru Okita - Planner, Former Graphic
Hiroyuki Seki - Planner, Former Graphic
Ryou Yokomizo - Planner, Former Graphics
Izumi Fukuda - Program
Takashi Iwanaga - Program
Kenji Ohira - Program
Akira Matsumoto - Program
Akihiro Terada - Program
Nobuya Wada - Program
Norifumi Hira - Program
Tadao Shoyama - Program
Takayuki Hanamasu - Program
Satoshi Sakaguchi - Program
Takahiro Matsumoto - Program
Yasutaka Ikeda - Program
Takahiro Karino - Graphics
Hideki Morinaga - Graphics
Keisuke Izaki - Graphics
Yoshinori Ikeshita - Graphics
Yasuhiro Ando - Graphics
Ryou Yokomizo - Graphics
Tsukasa Tanaka - Graphics
Akira Mizoguchi - Graphics
Yuya Rokuyama - Graphics
Mikio Kita - Graphics
Shinsuke Miyazaki - Graphics
Shou Nakamura - Graphics
Mikio Kita - Graphics

Toshiya Yamanaka - Program (retired/left company long ago)
Sayaka Fukuyama - ND Cube or CA Production
Hiroyuki Watanabe
Junichi Nagasaki
Yurie Okubo - ND Cube or CA Production

Key
(a) Consolidated subsidiary
(b) Non-consolidated subsidiary with equity method applied
(c) Non-consolidated subsidiary with equity method non-applied
(d) Affiliates with equity method applied
(e) Affiliates with equity method non-applied

"Software Development [Domestic]"
(a) ND CUBE Co., Ltd.
(a) Brownie Brown Co., Ltd.
(d) MONEGI Co.
(d) Mobile 21 Co., Ltd.
(e) Ape inc.

"Software Development [International]"
(a) Nintendo Technology Development Inc.
(a) Nintendo Software Technology Corporation
(a) Nintendo Software Canada Inc.
(a) Rare Acquisition Inc.
(a) Rare Limited
(a) Rare Inc.
(a) Rare Toys & Games, Inc.
(b) A/N Software Inc.
(d) Rareware Limited
(d) Left Field Productions, Inc.
(d) Retro Studios, Inc.
(d) Silicon Knights Inc.
(d) iKuni Inc.
(e) Midway/Nintendo Inc.

"Network Service"
(e) Randnet DD Co., Ltd

"Management of Game Creators"
(d) MarigulManagement Inc.
(d) MGM FUND Inc.
(c) Fukuei Co., Ltd.

"Electronic Registration Service of Merchandise"
(a) SiRAS.com Inc.
(a) Nintendo Services Ltd.

"Market Research"
(a) NES Merchandising Inc.
(a) NHR Inc.
(a) HFI Inc.

"Retailer [Japan]"
(d) Pocket Monster Center Ltd.

2001 - Nintendo World Wide Subsidiaries & Affiliates

Key
(a) Consolidated subsidiary
(b) Non-consolidated subsidiary with equity method applied
(c) Non-consolidated subsidiary with equity method non-applied
(d) Affiliates with equity method applied
(e) Affiliates with equity method non-applied

"Software Development [Domestic]"
(a) ND CUBE Co., Ltd.
(a) Brownie Brown Co., Ltd.
(d) MONEGI Co.
(d) Mobile 21 Co., Ltd.
(d) HAL LABORATORY, INC.
(e) Ape inc.

"Software Development [International]"
(a) Nintendo Technology Development Inc.
(a) Nintendo Software Technology Corporation
(a) Nintendo Software Canada Inc.
(a) Rare Acquisition Inc.
(a) Rare Limited
(a) Rare Inc.
(a) Rare Toys & Games, Inc.
(b) A/N Software Inc.
(d) Rareware Limited
(d) Left Field Productions, Inc.
(d) Retro Studios, Inc.
(d) Silicon Knights Inc.
(d) iKuni Inc.
(e) Midway/Nintendo Inc.

"IP Management"
(a) warpstar Co., Ltd.
(d) MarigulManagement Inc.
(d) MGM FUND Inc.
(c) Fukuei Co., Ltd.
(e) Randnet DD Co., Ltd

"Electronic Registration Service of Merchandise"
(a) SiRAS.com Inc.
(a) Nintendo Services Ltd.

"Market Research"
(a) NES Merchandising Inc.
(a) NHR Inc.
(a) HFI Inc.

"Retailer [Japan]"
(d) The Pokémon Company Ltd.

"Retailer [International]"
(a) Nintendo Services USA, Inc.
(d) Pokémon USA, Inc.

Keisuke Ai - Programmer - 2014 - Present (VR, Unity)

Shiki Nobuhisa - Programmer - Aug 2015 - Sep 2016

Takashi Nakamura - Planner - Jan 2014 - Jan 2015 · 1 yr 1 mo (Mario Party 10)

Kazuto Tokudome - Director / Planner

Works:

Everybody 1-2 Switch! (2023) - Mini Game Development
Mobile Suit Gundam Battle Operation- Code Fairy (2021) - Development Cooperation
Mario Party Superstars (2021) - Mini Game Development
Dragon Quest: The Adventure of Dai - Xross Blade (2020) - Development Cooperation
Super Mario Party(2018) - Mini Game Development
Animal Crossing: Pocket Camp (2017) - Development Cooperation
Mario Party: Star Rush (2016) - Development Cooperation
Mario & Luigi: Paper Jam (2015) - Development Cooperation
Wii U Party (2013) - Development Cooperation
Mario Party 9 (2012) - Development Cooperation
Yu-Gi-Oh!: 5D's World Championship 2011 - Over the Nexus (2011) - Development
Echocrome 2 (2010) - Development Cooperation
Adventure Island: The Beginning (2009) - Development Cooperation
Echocrome (PSP) (2008) - Development
Hot Shoft Golf: Out of Bounds (2008) - Development
Mario Party 8 (2007) - Development Cooperation
I.Q. Mania (2006) - Development
Mario Party 7 (2005) -Development Cooperation

Staff: (From Mobile Suit Gundam Battle Operation- Code Fairy (2021))

Producer/Director
Yoshikazu Takahashi

Planner
Takahiro Oguro
Junnosuke Tsuchimoto

Script
Takafumi Sugano
Ayane Taki
Yoshihisa Taki
Akari Matuura
Katsuhisa Onishi
Keita Nozawa
Yuta Nakao

Program
Takayuki Kimata
Masato Shimada
Ryo Takahashi
Takeshi Kawamoto
Shohei Tokunaga
Takanori Ode
Hajime Sunaga
Hidetaka Yajima
Tsutomu Kawamoto
Takuya Moriaka
Shane Poole
Takeshi Kobayashi
Takanori Kikuchi
Tomoki Matsuura

Art
Hirotaka Nakayama
Shinichiro Shimamura
Chie Watanabe
Ann Iizuka
Kengo Tsukada
Yuka Ogawa
Risa Takei
Akimi Suyama
Motoi Tashiro
Ayumi Fujita
Shoichi Kawamura
Mami Taniguchi
Yuki Kinoshita
Yuya Tsukada
Bin Tou
Mutsumi Tashiro
Ayu Suzuki
Misa Kuwahara
Yoshinori Hirai

Debug
Hiroshi Kurimoto
Shigeyasu Ohashi

Dev Support
Tatsuo Matsuda

Special Thanks
Hisao Hasunuma
Mitsuo Hasunuma

Development Coop:
Digital Works Ent.

Character Designer
Masayoshi Tanaka

Mechanical Designer
Kiyoshi Takigawa

Effect Artist
Takahito Tatezawa

Motion Art
Saki Matsuo
Takashi Araki

From Mario & Luigi: Paper Jam (2015)
Papercraft Battles Will Co., Ltd.
Production Management Noriyuki Saeki
Papercraft Battle Director Satoru Imamura
Battle Design Hisashi KishidaAyumu KawashiroYamato Sato
Main Program Haruhiko Tanuma
Program Takeshi KawamotoTsutomu KawamotoKengo MatsumuraKazuki TashiroTakanori Ohde
Graphic Design Lead Masayuki Tsuboi
Graphics Risa TakeiSenei SouShiori TeramotoKenichi UeyamaReiki NishikawaYuka ShimazakiShinichiro ShimamuraNoboru Matsumura
Production Support Hisao HasunumaMitsuo HasunumaKazuyuki MakishimaTatsuo MasudaHirotaka NakayamaHiroshi Kurimoto

Echocrome 2 (2010)
WILL Co.,Ltd. Hisao HasunumaMitsuo HasunumaKazuyuki MakishimaTakanori OdeNoriyuki SaekiHirotaka NakayamaSatoru Imamura

Staff from Hot Shots Golf 2008

Will Staff
Development Producer (開発プロデューサー) Tatsuo Masuda (増田 辰男)
Development Director (開発ディレクター) Noriyuki Saeki (佐伯 紀幸)
Planner (プランナー) Hisashi Kishida (岸田 悠)
Programmer (プログラマー) Takanori Kikuchi (菊池 貴則)Hironori Tsuruya (鶴谷 広典)Takanori Uoi (魚井 孝則)Shinya Morishige (森重 伸也)Kazuki Tashiro (田代 一樹)
Designer (デザイナー) Raizou Fuwa (不和 雷蔵)Hiromu (ヒロム)
Special Thanks (スペシャルサンクス) Hisao Hasunuma (蓮沼 尚夫)Mitsuo Hasunuma (蓮沼 充男)Kazuyuki Makishima (巻嶋 和幸)Hidetaka Yajima (矢嶋 秀崇)Hirotaka Nakayama (中山 浩孝)Hiroshi Kurimoto (栗本 博史)Junnosuke Tsuchimoto (土本 隼之介)Yoshikazu Takahashi (高橋 義和

Famicom Disk System
Famicom Grand Prix: F1 Race
Nazo no Murasamae-jou
Used to be shown on the SRD website, but it has been claimed Human worked on it
Super Mario Bros. 2 (programming)
Yume Kojo: Doki Doki Panic (programming)
Zelda no Densetsu (programming)

IS never programmed "Metroid", but technically Tohru Narihiro ported the Famicom Disk System version along with Kenji Nishizawa of Nintendo, to the NES in 1987.

Representative Director and President: Tetsuya Sasaki
Director: Shinya Takahashi
Director: Yusuke Beppu
Director: Kenji Yamamoto
Director: Kotaro Fukawa
Director: Keigo Watanabe (DeNA)
Director: Kenta Sugawara (DeNA)
Auditor: Takeshi Masuda

SEDIC, Inc.
1986 - 1991
Staff: Tsunekazu Ishihara, Hideki Izumi ,Toshio Iwai, Hiroshi Masuyama, Akihiko Miura, Makiko Nakamura
Games: Otocky (NES), Tetris 2 + BomBliss (NES, SNES)

• 6,717 employees (consolidated)
  • 2,634 employees (non-consolidated)
    • 1,600? employees (R&D)

Nintendo Sales Co., Ltd. (September 2021)

• 212 employees

Mario Club Co., Ltd. (September 2021)

• 343 employees

SRD Co., Ltd. (April 2022)

• 143 employees

1-UP Studio Inc. (April 2022)

• 75 employees

ND Cube Co., Ltd. (April 2022)

• 132 employees

Monolith Soft Co., Ltd. (December 2021)

• 273 employees

Nintendo European Research & Development SAS (December 2020)

• 63 employees

Nintendo Software Technology Corp. (???)

• 50? employees

Nintendo Technology Development Inc. (???)

• 50? employees

Retro Studios Inc. (Linkedin)

• 152 employees

Next Level Games Inc. (Linkedin)

• 109 employees

iQue China Co., Ltd. (???)

• ??? employees

Intelligent Systems
https://www.hal.ac.jp/cross/library/6721?page=4
Daichi Aoki (青木 大地 / あおき だいち)
Graduated 2014

https://www.hal.ac.jp/cross/library/1077?page=5
Yu Yamanaka (山中 優 / やまなか ゆう)
Graduated 2010

https://web.archive.org/web/20180707104850/http://www.hallab.co.jp/eng/create/jobs/01/

PROGRAMMER
Hiroshi Onishi, joined 2008

GAME GRAPHIC DESIGNER
Etsuko Sato, joined 2013

DIRECTOR
Nobuyuki Okada, joined 2008

AUDIO CREATOR
Megumi Ohara, joined 2015

BRAND MANAGEMENT
Yuki Yada, joined 2013

HARDWARE ENGINEER
Masanobu Sakata, joined 1986

Director/Brand Manager
Mei Erikawa (襟川 芽衣 / えりかわ めい)
Joined ????

Managing Executive Officer
Kenichi Ogasawara (小笠原 賢一 / おがさわら けんいち)
Joined 1997*

Senior Manager
Nobuhisa Hiroshige (廣重 演久 / ひろしげ のぶひさ)
Joined ????

Senior Expert/Technical Support
Jumpei Tsuda (津田 順平 / つだ じゅんぺい)
Joined ????

Planner/Omega Force
Kazunori Maejima (前嶋 一範 / まえじま かずのり)
Joined 2010

CG designer/Development Support
Tomoko Hara (原 知子 / はら ともこ)
Joined 2009

Web designer/Marketing
Kaito Sawatari (沢渡 海斗 / さわたり かいと)
Joined 2012

Managing Executive Officer
Kazuhiro Fujishige (藤重 和博 / ふじしげ かずひろ)
Joined ????

Executive Officer
Wataru Maeda (前田 渡 / まえだ わたる)
Joined ????

Senior Manager/Planner/Sound
Akira Tschiya (土屋 暁 / つちや あきら)
Joined ????

CG designer
Yusaku Kimura (木村 勇作 / きむら ゆうさく)
Joined 2010

Programmer
Atsuo Ooki (大木 敦夫 / おおき あつお)
Joined 2005

Planner
Urara Ozawa (小澤 麗 / おざわ うらら)
Joined 2014

Executive Officer
Akihiro Suzuki (鈴木 亮浩 / すずき あきひろ)
Joined ????

Executive Officer
Yosuke Hayashi (早矢仕 洋介 / はやし ようすけ)
Joined ????

Manager/Sound
Masayoshi Sasaki (佐々木 優嘉 / ささき まさよし)
Joined ????

Programmer/Technical Support
Masanari Watanabe (渡邉 理也 / わたなべ まさなり)
Joined 2010

Planner
Ryo Shimura (志村 亮 / しむら りょう)
Joined 2013

CG Designer
Mayu Inose (猪瀬 真由 / いのせ まゆ)
Joined 2005

*Even though the year isn't stated, Ogasawara-san said that 2017 was 20 years since he joined the company.

Metroid/Kid Icarus Code Names (confirmed as staff by H. Tanaka)
M. Goyake??
Hyakkan ???
Hatabo ???
Pen Pen???
Kacho??? (This may not be staff but another reference to a place they hang out)

Established Dice Co., Ltd. Capital 2 million yen Representative Director Akihiro Saito Audit & Supervisory
Board Member Akihiko Ozeki, later Akihiko Ozeki Appointed as Representative Director
Developed software for Nintendo, HAL Laboratory, and other companies

1992

• Super Nintendo / Othello World (Tsukuda )

1993/1994

• Super Nintendo / Vegas Stakes (Imagineer in Japan, Nintendo NA/EU )
• PC Engine / Strider Hiryu" (NEC)

1994/1995

• Game Boy / Adventures of Lolo (Imagineer in Japan, Nintendo of Europe in UK)
• Game Boy / Another Bible (Atlus)

1996

• Super Famicom / G.O.D: Mezameyo to Yobu Koe ga Kikoe (Imagineer)

1999

• Super Nintendo / Itoi Shigesato's No. 1 bass fishing" (Nintendo)

2000

• NINTENDO64 / Itoi Shigesato's bus fishing NO.1 definitive edition" (Nintendo)
• NINTENDO64 / SimCity 64" (Nintendo)

2001

• GAMECUBE / Smash Brothers Deluxe" Graphic Cooperation (Nintendo)
• GAMECUBE / Pokemon Stadium" Graphic Cooperation (Nintendo - Unreleased?)
• Game Boy Advance / SEGA Rally" (SEGA)