Mad Scienstein

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Mad Scienstein
Dr Arewo Stein Artwork Wario Land 4.png
Artwork of Mad Scienstein from Wario Land 4
Full name Dr. Arewo Shitain
Species Human
First appearance Kaeru no Tame ni Kane wa Naru (1992)
Wario Land 3 (2000, Mario-related media)
Latest appearance Wario Land 4 (2001, Mario-related media)

Mad Scienstein[1], originally known in Japan as Arewo Shitain-hakase[2] (meaning "Dr. Arewo Shitain"), and sometimes referred to simply as doc[3], is a recurring supporting character who appears throughout numerous Nintendo games. He has filled a multitude of different roles and professions; including a scientist, researcher, robotics engineer and archaeologist. Mad Scienstein is a comical, elderly man with a large head, glasses, a mustache, and a beard. Despite being around 90 years of age,[4] he demonstrates strong sexual interests.[5]

Mad Scienstein first appeared in the Japan-exclusive game Kaeru no Tame ni Kane wa Naru under the name of Arewo Shitain-hakase, where he acts as a researcher who provides assistance to the player in providing useful items. After an absence, he reappears in Wario Land 3, being referred to as Mad Scienstein. Here, he appears as an occasional entity who creates and throws invisibility potions. In Dr. Mario 64, he is Rudy's main minion, who assists Rudy in stealing Megavitamins, prompting the player to pursue him throughout the game. He has most recently appeared as an archaeologist, known again as Arewo Shitain-hakase, conducting research within the Golden Pyramid in Wario Land 4.


Mad Scienstein's original appearance, as Arewo Shitain-hakase.
Screenshot showing Arewo Shitain-hakase from Kaeru no Tame ni Kane wa Naru.


Mad Scienstein's character originated from Kaeru no Tame ni Kane wa Naru[2] (カエルの為に鐘は鳴る, meaning The Frog For Whom the Bell Tolls[6]), a Game Boy game that was released exclusively in Japan in 1992. In said game, he is known as Arewo Shitain-hakase, and is a member of the supporting cast surrounding the adventure of the Prince of Sablé. Arewo Shitain works as a researcher for an institute on Nantendou Island, providing the protagonist with helpful items such as gloves that increase strength, or a device that can control mammoths. He also appears in the final battle of the game, riding a robot of his own creation, the Tokyo Comic Show Z, which assists in defeating the final boss. Arewo Shitain is said to be a gourmet, and he frowns upon the thought of sharing his food. He is especially stingy when sushi is involved.

Wario Land series[edit]

Wario Land 3[edit]

Wario Land 3 screenshot of Mad Scienstein, who has just caused Wario to become invisible.

Mad Scienstein makes his first appearance within the Mario franchise in Wario Land 3. Here, he appears in a few levels throughout the game, starting with The Vast Plain. He carries many bottles of disappearing potions, which turns Wario invisible, allowing him to pass through Seeing-eye doors. While the rest of the enemies in the game are actually townsfolk cursed by Rudy, Mad Scienstein appears to still be human. However, his large bone-shaped head is replaced by a mechanical glass-domed helmet. Unlike most enemies in the game, Mad Scienstein makes no effort to hinder Wario's progress, and it is suggested by the official English website that he is trying to help Wario.[7]

His name comes from "mad scientist" and "stein," a Germanic word and name suffix meaning "stone" that is commonly associated with scientists due to famous physicist Albert Einstein and the fictional Victor Frankenstein.

Wario Land 4[edit]

WL4 Screenshot Section - Arewo Stein.png
Wario using Arewo Shitain-hakase as an object to throw, within a Puzzle Room.

Scienstein appears in Wario Land 4 as an archaeologist, again under the name Arewo Shitain-hakase, who came to conduct his own expedition of an ancient pyramid.[4] He is first seen in the game's opening sequence, where a picture of him can be seen in the newspaper reporting the pyramid's discovery. In an official bio, he is stated to be a robot engineer and an Honors Professor at the Masakāchotto University Engineering Department.[4]

A panicking Arewo Shitain-hakase jumping on Wario in order to quickly and safely exit the crumbling pyramid.

During the game, Wario can usually encounter Arewo Shitain-hakase within the various bonus rooms inside the levels, where he can be found slowly pacing back and forth with a magnifying glass. Wario can interact with Arewo Shitain In the same way as most other enemies: he can be stunned, picked up, and thrown to break blocks or hit switches that are out of reach. This is commonly required to solve a puzzle in the rooms to reach a Diamond. Arewo Shitain has a unique sound clip (a loud exclamation of "Oww!") that is heard whenever Wario harms him. Unlike most enemies however, none of Wario's attacks actually defeat Arewo Shitain. If he ends up falling in water, he dons scuba gear and swim along the bottom where the player can no longer interact with him (unlike the game's enemies, which are destroyed if they come in contact with water). When Arewo Shitain-hakase is submerged in water, Wario must leave the room and come back in order to interact with him again. He can sometimes also be seen outside of bonus rooms, appearing on various different locations on the game's main map screen. He also appears as an obstacle in the minigame The Wario Hop.

After Wario defeats the Golden Diva, ruler of the pyramid, Arewo Shitain falls from above the ceiling after the pyramid begins to collapse. He is later seen trying to escape the pyramid alongside Wario and the Black Cat. While panicking, Arewo Shitain-hakase jumps on Wario in order to safely exit first. This is the last time that Arewo Shitain-hakase is seen in the game.

Arewo Shitain-hakase also appears as an obstacle in the beginning of the minigame The Wario Hop, where he is seen eating an onigiri. He also has various in-game idle animations, including one which depicts him playing with a Game Boy Advance. An interview with Arewo Shitain-hakase's character on the Wario Land 4 official Japanese gamepage confirms that he occasionally plays games to take a break from research. The same interview also suggests that he reads adult magazines and performs activities he cannot discuss with young boys while on his breaks.[5]

Dr. Mario 64[edit]

In Dr. Mario 64, Mad Scienstein once again serves as a minion to Rudy, assisting in his plan to steal the Megavitamins from Dr. Mario after Wario made an attempt to steal them in order to become a doctor himself. Both Dr. Mario and Wario chase Mad Scienstein throughout the land, facing various foes from Wario Land 3. In Dr. Mario's ending, he cures Rudy to Mad Scienstein's joy, whilst in Wario's ending, Mad Scientstein steals the Megavitamins from Wario leading to the latter pursuing him in an apparently never-ending chase.

Dr. Mario 64 is also the first and only game where Mad Scienstein is playable. Mad Scienstein is slightly stockier compared to his appearance Wario Land 3.

Super Mario-Kun[edit]

Mario head smaller.png This section is a stub. You can help the Super Mario Wiki by expanding it.
DrArewoStein SuperMarioKun.jpg

Arewo Shitain-hakase appears in volume 28 of Super Mario-Kun.

Official profiles[edit]

Wario Land 4 Shogakukan game guide (Japanese) (page #3)[edit]

"Robot engineering authority, Honors Professor [at the] Masakachotto University Engineering Department. [He] heard the rumours of the Golden Pyramid [and] set off on his own expedition. His age is about 90 years old."

Nintendo Power Advance issue #3, Wario Land 4 guide (page #54)[edit]

"To get the diamond, you have to employ the good doctor's help."

Faux character interview on the official Wario Land 4 webpage (Japan)[edit]

"Oh! My name is Professor Shitain! I also appeared in Wario Land 3! So of course you know me well! What? You never heard of me? Well, listen carefully. I came to this pyramid because I’m an archaeologist. As you pointed out, I do show up in Wario Land 4 to play games from time to time. Sometimes, I need to take a break from my research. Forgive me. Actually, I do some other things during my breaks, but it’s not appropriate for young boys... so have your mother explain to you someday!"

"It’s not easy to say out loud... I looked at something for adults. Even though I looked behind me to make sure no one was looking, it seems someone found out. I guess I’m a man after all!"



Names in other languages[edit]

Language Name Meaning
Japanese マッド=シタイン[8]
Maddo Shitain
Arewo Shitain-hakase
Mad Stein

"Arewo Shitain" is a pun on are o shitai, meaning "I want to do that!" and the Germanic name suffix "-stein;" hakase is a title for a doctor or professor.
French Dingo-Savant Crazy-Scientist


  1. ^ Wario Land 3 English instruction booklet, pg. 27.
  2. ^ a b Association of Arewo Shitain's character with his first appearance, taken from the Wario Land 4 official Shogakukan Japanese guide
  3. ^ Nintendo Power Advance issue #3, page 55
  4. ^ a b c d Wario Land 4 official Shogakukan Japanese guide, page 3.
  5. ^ a b "Ask Wario" Nintendo Japan translation by Source Gaming (accessed on September 6, 2016)
  6. ^ Miiverse post by Masahiro Sakurai (retrieved July 18, 2016)
  7. ^ Official American Wario Land 3 website description for The Vast Plain, Wayback Archive
  8. ^ Wario Land 3: Fushigi na Orgel Japanese instruction booklet, pg. 27.