Professor E. Gadd

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Professor E. Gadd
Professor E. Gadd as he appears in Luigi's Mansion 3
Full name Professor Elvin Gadd
Species Human
First appearance Luigi's Mansion (2001)
Latest appearance Super Mario 3D All-Stars (cameo) (2020)
Latest portrayal Kazumi Totaka (2001–present)
“Ooof... I sure take a lot of knocks in this line of work. I'm getting too old for this ghost-catching tomfoolery. Anyway, nice to meet you. I'm Professor E. Gadd.”
Professor E. Gadd, Luigi's Mansion

Professor E. Gadd, also known by his full name Professor Elvin Gadd or simply E. Gadd, is an elderly scientist who debuted in Luigi's Mansion and is the founder of Gadd Science, Incorporated. He is a researcher of ghosts and is responsible for a variety of inventions, most notably the Poltergust series of vacuums. He makes ambiguous gibberish sounds when speaking (supplied by Kazumi Totaka, who took inspiration from Animal Crossing's "Animalese" when inventing the voice[1]), and he frequently uses phrases such as "criminy", "hullabaloo", etc. His name comes from the exclamation "egad", a minced oath for the archaic expletive "ye gods."



In his past, E. Gadd lived on the foothills of the Thwomp Volcano, as depicted in Mario & Luigi: Partners in Time. The Mario Bros. go back in time and end up saving his lab from burning down when fire blocks erupted from the Thwomp Volcano. He then helps the Mario Bros. by inspiring his older present self to create the Hydrogush 4000; as the Mario Bros. are in the present, he starts to get the idea for the device, which transfers to his future self. The present-day Professor E. Gadd uses the Hydrogush 4000 to send water through via time hole and calm the erupting Thwomp Volcano. Afterwards, E. Gadd moves to Boo Woods when he was around twenty-years-old, where he would later study ghosts.[2] In order to get funding for his ghost research, E. Gadd also started a cafe franchise called Starbeans Cafe.[3]

Luigi's Mansion series[edit]

Luigi's Mansion[edit]

Artwork of Professor Elvin Gadd holding an early design of the Poltergust 3000, from Luigi's Mansion
Professor E. Gadd with the original design for the Poltergust 3000 in Luigi's Mansion.

Many decades later, in Luigi's Mansion and its remake, Luigi enters the mansion and is saved from a Gold Ghost by Professor E. Gadd wielding the Poltergust 3000, as shown in a cutscene. The professor reveals that he lives in a house near the mansion, where he researches his favorite subject: ghosts. Luigi explains his brother Mario is missing within the house, and the professor decides to help Luigi by giving him the Poltergust 3000 and the Game Boy Horror. The professor continues to help Luigi throughout the game, giving him help and tips.

Luigi's Mansion: Dark Moon[edit]

E. Gadd with Luigi in Luigi's Mansion: Dark Moon.

After a few years of absence, Professor E. Gadd appears in Luigi's Mansion: Dark Moon. In the game, E. Gadd takes up residence in Evershade Valley after learning that the ghosts there are friendly due to the effects of the Dark Moon that hangs over there pacifying them. Eager to examine ghosts without fear of being attacked by them, he sets up a laboratory in the Gloomy Manor and a Bunker close by the mansion. There, he begins researching the ghosts of the five mansions that populate the valley, and sends his five Toad assistants to the other four mansions in the valley to examine the ghosts there. At first, the resident ghosts welcome him and assist him in his lab, but when King Boo arrives and destroys the Dark Moon, the ghosts start running amok and destroy E. Gadd's equipment. He flees to his nearby Bunker and enlists the help of Luigi — who has now taken up residence in his new Grade D mansion from the previous game — to help rebuild the Dark Moon and calm the ghosts once more. E. Gadd was later revealed to have been unintentionally and indirectly responsible for King Boo's return, as he had sold his portrait in a garage sale (a car boot sale in the British English version), thus ensuring his escape.

In this game, E. Gadd has made an upgrade of his Poltergust 3000 from the last game: the Poltergust 5000. This new Poltergust uses a Strobulb to stun ghosts, rather than the flashlight used with the Poltergust 3000. Professor E. Gadd also introduces three new inventions: the Pixelator, a machine that turns Luigi into pixels and transports him to and from the different mansions, the Dual Scream, a device that resembles a Nintendo DS and is capable of communication, and the Dark-Light Device, which allows Luigi to see invisible objects. He doesn't leave the Bunker until the end of the game, directly after beating King Boo.

Luigi's Mansion Arcade[edit]

E. Gadd has a similar role in Luigi's Mansion Arcade to that of Luigi's Mansion: Dark Moon, in that he communicates with Luigi while the latter explores the mansions, and offers a tutorial to the player upon starting the game.

Luigi's Mansion 3[edit]

Artwork of Professor E. Gadd with the Poltergust G-00
Professor E. Gadd in Luigi's Mansion 3 with the Poltergust G-00

E. Gadd returns in Luigi's Mansion 3. Having been tricked by Hellen Gravely into coming to the The Last Resort, E. Gadd is trapped in a painting and his ghost collection, including King Boo, is released. He is later saved by Luigi, who escaped a similar trap and borrowed the Poltergust G-00 from E. Gadd's car in the hotel's basement. E. Gadd initially attempts to flee the hotel, but when Luigi insists on staying to save his captured friends, E. Gadd relents. After setting up his portable lab in the basement, E. Gadd gives Luigi the Virtual Boo for communication purposes. He later has Gooigi accompany Luigi throughout the hotel. He also uses the lab to provide a safe haven for the saved Toads.

Towards the end of the game, King Boo attacks Professor E. Gadd's lab when Luigi follows after the recently-released Mario to find Princess Peach, and traps him and everyone else in a single painting. Luigi is saved from the painting by Polterpup, and he manages to recapture King Boo and free all his friends. E. Gadd also offers to help the ghosts rebuild the now destroyed Last Resort complex (which was apparently his idea), providing construction hard-hats to Luigi and some of the ghosts (although a Hammer obliviously eats his). After the hotel is rebuilt in E. Gadd's likeness, Professor E. Gadd stays behind with Gooigi and the ghosts while everyone else departs.

While E. Gadd is following Luigi, one of the poses he strikes if flashed by the Strobulb references Marilyn Monroe's famous "white dress scene" in The Seven Year Itch. The back of his lab coat even flutters upward during the pose.

Super Mario series[edit]

Super Mario Sunshine[edit]

Although Professor E. Gadd does not appear in Super Mario Sunshine, when Mario initially finds FLUDD at the Delfino Airstrip, it says, "Thank you for purchasing this item from Gadd Science, Inc." Later, Bowser Jr. says he got his magic brush from "a strange old man in a white coat." Bowser Jr. uses the paintbrush to frame Mario and get him away long enough for himself to go in and kidnap Princess Peach. This is a fitting description of Professor E. Gadd, which is further confirmed when FLUDD seems to react in surprise to the statement. Bowser Jr. claims E. Gadd gave the brush to him of his own free will and that he did not know the professor's name when he received the brush, but it is unknown whether this is true or not. There is a symbol on both the magic brush and FLUDD showing a face and hairstyle similar to E. Gadd's, which seems to be the Gadd Science, Inc., logo. It appears on many of E. Gadd's other inventions, as well as nozzle boxes.

Super Mario Maker[edit]

E. Gadd makes an appearance in Super Mario Maker as a Mystery Mushroom costume for Mario when using the Super Mario Bros. theme. The costume can be unlocked by completing the Event Course Paranormal Research.

Mario & Luigi series[edit]

Mario & Luigi: Superstar Saga / Mario & Luigi: Superstar Saga + Bowser's Minions[edit]

Professor E. Gadd sucking up a ghost in Mario & Luigi: Superstar Saga
Professor E. Gadd sucking up a ghost in Mario & Luigi: Superstar Saga.

In Mario & Luigi: Superstar Saga, E. Gadd owns Starbeans Cafe in Beanbean Castle Town. If Mario and Luigi brew a new coffee blend, E. Gadd arrives and requests a drink. They offer E. Gadd the drink, and he rewards them with equippable Special Items that grant special effects. Originally, the game was going to feature Professor E. Gadd only once, only when Mario and Luigi brewed the Woohoo Blend; for other drinks, different characters would have appeared. These characters were Wario, Samus Aran, Fox McCloud, Link, an Excitebike racer, and Captain Olimar.

While Professor E. Gadd reprises his role in the remake of Mario & Luigi: Superstar Saga, Mario & Luigi: Superstar Saga + Bowser's Minions, he also shows up during the Minion Quest: The Search for Bowser side story. Here, he is found in a cave by Bowser's minions, claiming to have followed ghosts when he fell in. E. Gadd begins talking to Bowser's minions about his research, and says he is also working on a time-travel device, a nod to the original main story's sequel. He also alludes to Starbeans Cafe and reveals he founded the company as a way to get funding into his ghost research.

Reactions to the drinks

The professor has many different reactions for each time a new drink is made at Starbeans Cafe, usually accompanied with a humorous scene.

  • The first reaction gives a reference to Luigi's Mansion when the new brew attracts a Gold Ghost, which scares Luigi, but the professor comes in with the Poltergust 3000 and sucks it up. The professor explains that he owns the Cafe, and that each time he samples a new brew, he will give a gift to the Bros. He samples the brew and gifts to them the Greed Wallet.
  • The second reaction has the professor drawn in by the smell of the drink, and samples a flavor. He then gives the Bros. the Bonus Ring. The professor then has a major reaction to the very "Strong Brew" and asks the bartender where the bathroom is. The bartender replies that he had never built one. Luigi then rushes to get the Poltergust 3000 and sucks the professor in.
  • The third reaction has him on a Poltergust 3001, a rocket. He samples the drink and gives the Excite Spring before blasting away.
  • The fourth has him on a giant Game Boy Horror. He sends a Speedy Spirit as a representative for the sampling, much to Luigi's terror. After that, the ghost drops the Great Force.
  • In the fifth reaction, he has the giant Game Boy Horror send the drink to him. He then gifts them the Power Grip in the original or Secret Specs in the remake. He promises to come in person the next time a new brew is made.
  • In the sixth reaction, E. Gadd comes wearing a suit that makes him a ghost. He samples the drink and gives the Cobalt Necktie. A terrified Luigi uses the Poltergust 3000 to suck the professor inside.
  • In the final one, he samples the last drink and proclaims it the best one, much to his employee's annoyance. He gives the Bros. the Game Boy Horror SP. Before leaving, he hangs a photo of himself in the shop as a way to brighten one's spirits, which the employee labels dumb.

Mario & Luigi: Partners in Time[edit]

See also: Elvin Gadd (past)
Professor Elvin Gadd's artwork in Mario & Luigi: Partners in Time.
Professor E. Gadd appearing in Mario & Luigi: Partners in Time.

E. Gadd has a much larger role in Mario & Luigi: Partners in Time, he introduces his newest invention to the Mushroom Kingdom, a time machine in Peach's Castle. Princess Peach, accompanied by Toadiko and Toadbert, volunteers to travel in the machine. However, when the time machine returns, the Junior Shrooboid emerges from it. After the bros. defeat it, Gadd keeps it submerged in a tank, allowing him to study it.


Out in the courtyard, Mario and Luigi discover a hole in the ground; E. Gadd elaborates that this hole is a time hole, a rip in the time-space continuum, which was created by the use of the time machine. After Luigi falls in the hole and Mario heads in to save him, the professor sends Stuffwell, a sentient suitcase, through to help them. For most of the game, E. Gadd is seen studying the Junior Shrooboid defeated earlier. He is able to communicate with Stuffwell even if the brothers and Stuffwell travel to the past.

Sprite of Elvin Gadd (past)

At Thwomp Volcano, Mario, Luigi, and their baby counterparts come across and paradoxically meet a younger Professor Gadd, who is studying Thwomps. During this time, though, the volcano erupts, with several Thwomps falling in and destroying the laboratory. One threatens to explode, and must be put out; Baby Mario and Baby Luigi do this by having Baby Mario drink water and Baby Luigi hammering him to spit it at the Thwomp, dousing it. Witnessing this event in the past causes the present day E. Gadd's memories to be rearranged and inspires him to invent the Hydrogush 4000, a massive water pump. Mario and Luigi then have him pump water through the time hole leading to Thwomp Volcano to douse the mountain. After his lab is destroyed by the eruption of the volcano, young E. Gadd mentions his interests in studying ghosts, and that he would be buying a lab at the edge of Boo Woods, nodding toward his first appearance in Luigi's Mansion.

After discovering that baby tears are the Shroob's weakness, Mario, Luigi, and Princess Peach relate this to the professor. E. Gadd then uses the Hydrogush to pump a liquid similar to Baby Luigi's tears through the time holes, removing the Shroobs and restoring any Shroobified characters. He also restores the time machine and uses it to bring everyone back to the future.

Mario Party series[edit]

A flashlight known as the Gaddlight was used to scare away Boos when they try to steal a Star or coins in Mario Party 4.

In Mario Party 5's Super Duel mode, several vehicle parts are designed by E. Gadd.

Professor E. Gadd's garage is a game board in Mario Party 6. When a player lands on a ? space on this board, E. Gadd appears and lets them try one of his inventions.

Professor Elvin Gadd
Professor E. Gadd as seen in Mario Party Advance.

In Mario Party Advance, E. Gadd appears as the co-host of Play Land. The coins earned in the minigames can be used to buy Professor E. Gadd's many "Gaddgets".

A magic wand bearing Gadd's logo later appears in Mario Party 7.

Mario Kart series[edit]

E. Gadd makes a small cameo in Mario Kart Arcade GP as a statue in the background of the Diamond City course in the Wario Cup. His face, the logo of Gadd Science, appears on a building as well. This cameo carries over into the sequel, Mario Kart Arcade GP 2. It is implied that E. Gadd is the creator of Robo Mario, as evidenced by the logo on Robo Mario's cap.

Super Smash Bros. series[edit]

In Super Smash Bros. Brawl, one of the names that can appear when a player presses the random button when naming their custom stage is "EGADD".

E. Gadd appears in Super Smash Bros. for Nintendo 3DS as a collectible trophy. The description of his trophy talks about his role within Luigi's Mansion: Dark Moon, describing the events of the Dark Moon being shattered, and the professor calling upon Luigi to aid him. E. Gadd is referred to by his full name - Professor Elvin Gadd - in American English, while the British English version has his first name abbreviated.

Additionally, E. Gadd appears as a spirit in Super Smash Bros. Ultimate, as well as "EGADD" being one of the randomly generated names the player can receive.

Despite not appearing in any Super Smash Bros. titles until the fourth installment, E. Gadd is mentioned in the Vacuum Luigi trophy in Super Smash Bros. Melee, the trophies for F.L.U.D.D. and the Poltergust 3000 in Super Smash Bros. Brawl, the trophy representing the various ghosts that appeared in Dark Moon in Super Smash Bros. for Nintendo 3DS, and Luigi's Final Smash trophy, the Poltergust 5000, in Super Smash Bros. for Wii U.

Unused appearances[edit]

Mario Kart DS[edit]

There is evidence in the US demo prototype version of Mario Kart DS that E. Gadd was going to be playable, which would have been his first playable appearance, but he was replaced with Dry Bones in the final version.

General information[edit]

It has been requested that this section be rewritten and expanded to include more information. Reason: Include a General info section on personality (tagged on August 28, 2020)


Professor Elvin Gadd
Professor E. Gadd in Luigi's Mansion

Professor E. Gadd is a small, elderly man. He wears brown shoes and a white lab coat with a red shirt underneath. He has a large head wider than his body, with a pink nose, a mouth with a singular tooth, large glasses with circles in them, and a tall but thin amount of white hair on his head. He has small dotted eyes, which are normally obscured by his glasses, but can be seen in some games if viewed at certain angles.[4] Glasses with swirls that are often seen in Japanese media are a feature E. Gadd shares with Mad Scienstein, Professor Frankly, Fawful, Francis, and Iggy Koopa. In The Legend of Zelda: The Wind Waker, there is a character named Mako whose face resembles E. Gadd's.

In Mario & Luigi: Superstar Saga and its remake, he can also wear a large blue coat.

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Profiles and statistics[edit]

Mario & Luigi: Partners in Time[edit]

  • Guide bio: "The Mushroom Kingdom's resident mad scientist, Professor E. Gadd, is responsible for creating the time machine. The professor will aid Mario and Luigi by offering advice and guiding the brothers to their next objective. He talks like an Ewok."[5]

Luigi's Mansion series[edit]

Luigi's Mansion: Dark Moon[edit]

  • North American website bio: "Known for his paranormal research and plethora of wild inventions, Professor E. Gadd just needs someone crazy enough to put them to the test."
  • European website bio: "An eccentric scientist who invented the Poltergust 5000, a big improvement on the previous 3000 model. After the ghosts turn hostile and take over mansions, he calls on his old friend Luigi to help out."

Luigi's Mansion 3[edit]

  • In-game bio: "A genius inventor and the leading authority in the field of ghost research. His beloved ghost collection is said to be the best in all the world! He supports Luigi in his adventures...from the safety of his Lab, that is!"

Super Smash Bros. series[edit]

Super Smash Bros. for Nintendo 3DS[edit]

Professor Elvin Gad[sic] (American English) / Professor E. Gadd (British English)
Professor E. Gadd
Category: Series Related
How to unlock:
The ghosts of Evershade Valley have gone wild under the shadow of the shattered Dark Moon, so Professor E. Gadd of Gadd Science, Inc., asks Luigi to gather the moon's scattered pieces. I say "asks," but Professor Gadd has never really given Luigi a choice... (American English)
The Dark Moon in the sky above Evershade Valley has shattered! With all the ghosts going on the rampage, Professor E. Gadd, the leading authority on ghost research, calls in a quivering Luigi to sort out the mess. The professor never was one to give him much of a choice... (British English)

Super Smash Bros. Ultimate spirit[edit]

#120 Professor E. Gadd
Professor Elvin Gadd artwork Series/game Luigi's Mansion Series
Type Support
Slots 2
Class Advanced
Strength / effect(s) Energy Shot Attack/Resistance ↑
How to obtain Summoned with a Poltergust 5000 and F.L.U.D.D. core

List of appearances by date[edit]

# Title Role Release date Format

1 Luigi's Mansion Non-playable character Japan:
September 14, 2001
Nintendo GameCube
2 Mario Party 5 Cameo as vehicle parts North America:
November 10, 2003
Nintendo GameCube
3 Mario & Luigi: Superstar Saga Non-playable character North America:
November 17, 2003
Game Boy Advance
4 Mario Party 6 Non-playable character Japan:
November 18, 2004
Nintendo GameCube
5 Mario Party Advance Non-playable character Japan:
January 13, 2005
Game Boy Advance
6 Mario Kart Arcade GP Cameo North America:
7 Mario Party 7 Cameo as item (Magic Orb) North America:
November 7, 2005
Nintendo GameCube
8 Mario & Luigi: Partners in Time Non-playable character North America:
November 28, 2005
Nintendo DS
9 Mario Kart Arcade GP 2 Cameo Japan:
10 Luigi's Mansion: Dark Moon Non-playable character Japan:
March 20, 2013
Nintendo 3DS
11 Super Smash Bros. for Nintendo 3DS Cameo Japan:
September 13, 2014
Nintendo 3DS
12 Luigi's Mansion Arcade Non-playable character Japan:
Summer, 2015
13 Super Mario Maker (version 1.32) Mystery Mushroom costume Japan:
February 4, 2016
Wii U
14 Mario & Luigi: Superstar Saga + Bowser's Minions Non-playable character Japan:
October 5, 2017
Nintendo 3DS
15 Luigi's Mansion Non-playable character North America:
October 12, 2018
Nintendo 3DS
16 Super Smash Bros. Ultimate Cameo Worldwide:
December 7, 2018
Nintendo Switch
17 Luigi's Mansion 3 Non-playable character Worldwide:
October 31, 2019
Nintendo Switch


For this subject's image gallery, see Gallery:Professor E. Gadd.

Names in other languages[edit]

Language Name Meaning
Japanese オヤ・マー博士[6]
Pun on「おやまあ」(oyamā, Japanese exclamation for "oh my god!") and a reference to Nintendo designer「尾山佳之」(Yoshiyuki Oyama)[7] +「博士」(hakase, "professor")

Chinese (simplified) 哎哟博士 (Mario & Luigi: Superstar Saga)
Āiyō Bóshì
哎哟・喂博士 (since Super Smash Bros. Ultimate)
Āiyō-wèi Bóshì

Localization of the Japanese name;「哎哟」means "uh-oh" and「喂」(wèi) means "hey", and「博士」means "professor" or "doctor", which is used for addressing highly educated academics.

Chinese (traditional) 哎唷・喂博士
Āiyō-wèi Bóshì
Localization of the Japanese name;「哎唷」means "uh-oh" and「喂」means "hey", and「博士」means "professor" or "doctor", which is used for addressing highly educated academics.

Dutch Professor Klemens Wibus
Professor K. Wibus
Pun on kwibus ("weirdo")
French Professeur Karl Tastroff
Professeur K. Tastroff
Pun on "catastrophe"
Pun on "catastrophe"
French (NOA) Professeur E. Gadd[8]
German Professor Immanuel Gidd
Professor I. Gidd
Pun on German exclamation igitt ("ugh")
Pun on German exclamation igitt ("ugh")
Hungarian Elvin Gadd professzor[9]
Professor Elvin Gadd
Italian Professor Strambic
Corruption of strambo ("wacky")
Korean 아라따박사
Aratta Baksa
Pun on "알았다" (aratda, Korean exclamation for "roger") + 박사 (baksa, "doctor")

Portuguese (NOA) Professor D. Zastre[10]
Pun on desastre ("disaster")
Portuguese (NOE) Professor Anacleto Luado
Pun on aluado ("lunatic")
Russian Профессор П. У. Галкин
Professor P. U. Galkin
From пугать (pugat, "to scare")

Spanish (NOA) Profesor D. Sastre
Pun on desastre ("disaster")
Spanish (NOE) Profesor Fesor
A clipping of "professor"


  • One of E. Gadd's voice lines, "Oyamaa", is both his Japanese name and an exclamation of surprise. This happens even in overseas releases. He can also sometimes be heard saying "Luigi!" or "Mario!"
  • Professor E. Gadd is one of the few characters in the franchise who existed prior to Nintendo's translating games and websites to Dutch to receive a new name in said translation, as opposed to keeping his English name.


  1. ^ JC, Anthony (September 2001). The Making of the Game - Luigi's Mansion. (translation from Nintendo Online Magazine). Archived October 14, 2007, 10:35:05 UTC from the original via Wayback Machine. Retrieved August 28, 2020.
  2. ^ "I've been living here since I was a lad of twenty or so [...]" – Professor E. Gadd (2001). Luigi's Mansion.
  3. ^ "Ah, but as with all things, conducting research requires a fat stack of coins. So I decided to manage the Starbeans Cafe as a secondary source of income!" – Professor E. Gadd (2017). Minion Quest: The Search for Bowser.
  4. ^ Shesez (July 14, 2019). Top 10 Hidden Faces in Video Games... Revealed! (02:13). YouTube. Retrieved November 3, 2019.
  5. ^ Hoffman, Chris (November 18, 2005). Mario & Luigi: Partners in Time Nintendo Player's Guide. Nintendo of America (American English). ISBN 1598120069. Page 3.
  6. ^ Nintendo. ルイージマンション3 : オバケホテル | Nintendo Switch | 任天堂. Nintendo (Japanese). Retrieved May 13, 2024.
  7. ^ (March 2006). "Inside Zelda: Yoshiyuki Oyama, Monster Designer" - Nintendo Power Issue 201. Nintendo of America (American English).
  8. ^ Nintendo (2001). Luigi's Mansion Canadian instruction booklet. Nintendo of Canada (Canadian French). Page 32.
  9. ^ Luigi’s Mansion™ Lab és Poltergust kiegészítő szett. (Hungarian). Retrieved May 13, 2024.
  10. ^ Pacote de expansão - Laboratório e Aspirespectro de Luigi’s Mansion™. (Brazilian Portuguese). Retrieved August 20, 2022.