Professor Elvin Gadd

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Professor Elvin Gadd

Professor Elvin Gadd, as he appears in Luigi's Mansion.
Full name Professor Elvin Gadd
Species Human
First appearance Luigi's Mansion (2001)
Latest appearance Luigi's Mansion 3 (2019)
Latest portrayal Kazumi Totaka (2001-present)
“I'm getting too old for this ghost-catching tomfoolery.”
Professor Elvin Gadd, Luigi's Mansion

Professor Elvin Gadd, also known as Professor E. Gadd (often Dr. E. Gadd) or simply The Professor, is the scientist first appearing in Luigi's Mansion and founder of Gadd Science, Incorporated. He always speaks in ambiguous gibberish (supplied by Kazumi Totaka, who took inspiration from Animal Crossing's "Animalese" when inventing the voice[1]). His name comes from the minced oath "egad!", something that one says in amazement or shock.



He lives on the foothills of the Thwomp Volcano, as depicted in the game 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 inventing the Hydrogush 4000. Although he doesn't directly invent the Hydrogush 4000, his older self does in a complex way: Young E. Gadd starts to get an idea after a totally unrelated event happened during the present time, which transfers to his future self, causing the present-day, elderly professor to send water from the Hydrogush 4000 via Time Hole and calm the erupting Thwomp Volcano. After all this excitement, the twenty-year-old E. Gadd moves to Boo Woods.

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, Luigi enters the mansion and is saved from ghosts by a strange old man wielding a vacuum cleaner. Professor E. Gadd reveals 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 two of his inventions, the Poltergust 3000 and the Game Boy Horror. The professor continues to help Luigi throughout the game, giving him help and tips.

Super Mario Sunshine

Although Professor E. Gadd does not appear in Super Mario Sunshine, when Mario initially finds F.L.U.D.D. at the Delfino Airstrip, it says, "Thank you for purchasing this item from Gadd Science, Inc.". Later, Bowser Jr. says he got his Magic Paintbrush 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 F.L.U.D.D. seems to react in surprise to the statement. It is unknown if E. Gadd actually gave Bowser Jr. the paintbrush, or if Bowser Jr. stole it from him, though the latter theory is more likely. There is a symbol on both the Magic Paintbrush and F.L.U.D.D. 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 the boxes for F.L.U.D.D.'s nozzle upgrades.

Mario & Luigi series

Mario & Luigi: Superstar Saga

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

In Mario & Luigi: Superstar Saga, the professor makes an appearance supplying the brothers with an array of accessories to help them along their way each time they drink at Starbeans Café, a coffeehouse that he owns. He makes various unique entrances each time a new drink is made.

However, it has been found that originally, the game was only going to feature Professor E. Gadd once, the first time Mario and Luigi get a drink; in all of the future times, different characters would have appeared. These characters are Wario, Samus Aran, Fox McCloud, Link, an Excitebike racer, and Captain Olimar. These characters were taken out for reasons unknown.

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

  • The first reaction is when the new brew attracts a Ghost from Luigi's Mansion, 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 givesthem 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 in the building. 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 ghost 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 by pulling the drink virtually through the transmitter. He then gifts them the Power Grip in the original or Secret Specs in the remake. He promises to come in person.
  • 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 gifts 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 dislikes claiming it "stinks".

Mario & Luigi: Partners in Time

Professor E. Gadd appearing in Mario & Luigi: Partners in Time.

In Mario & Luigi: Partners in Time, the professor debuts his newest invention to the Mushroom Kingdom, a Time Machine. Princess Peach, accompanied by Toadiko, and Toadbert, volunteers to be a passenger on its maiden voyage. However, when the time machine returns, it is not the trio that left but rather a strange creature that emerges instead. After the bros. defeat it, Gadd places the creature inside a tube of fluid, keeping it alive and 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 rest of the game, E. Gadd is seen studying the Junior Shrooboid defeated earlier.

At Thwomp Volcano, Mario, Luigi, and their baby counterparts come across 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; Mario and Luigi do this by having Mario drink water and Luigi hammering him to spit it at the Thwomp, dousing it. Witnessing this event in the past causes inspires E. Gadd of the present 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 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 in chemical structure to Baby Luigi's tears through the time holes, ridding the presence of the Shroobs and reversing the state of their victims.

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.

Mario & Luigi: Superstar Saga + Bowser's Minions

While Professor E. Gadd reprises his role as the Starbeans Cafe owner 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 sub-plot. 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 planning on working on a time-travel device. A device that resembles a Time Machine can be seen in Luigi's Mansion 3 implying this is what he was talking about.

Super Mario Maker

E. Gadd also makes a minor 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 Party series

Professor E. Gadd as seen in Mario Party Advance.

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, Professor E. Gadd's garage is a minigame and was then featured as a game board in Mario Party 6. Also in Mario Party 6, when a player lands on a ? space E. Gadd will appear and let them try one of his inventions.

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

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

Mario Kart series

E. Gadd's inventions are sometimes used as items in the Mario Kart series.

Mario Kart DS

The Poltergust 4000 kart used by Luigi is based off of his Poltergust 3000 invention. Also, he was going to be a playable character (along with Birdo, Toadette, and Koopa Troopa) but was replaced by Dry Bones.

Mario Kart Arcade GP series

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.

Luigi's Mansion: Dark Moon

E. Gadd with numerous of his inventions.
E. Gadd with Luigi in Luigi's Mansion: Dark Moon.

After a few years of absence, Professor E. Gadd appears in the game Luigi's Mansion: Dark Moon. In the game, E. Gadd takes up residence in Evershade Valley after learning that the ghosts there are friendly. 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 ghost-pacifying Dark Moon that hangs over Evershade Valley, 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, 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.

Luigi's Mansion Arcade

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

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, and traps him and everyone else in a single painting. Luigi was saved from this by Polterpup, and he manages to recapture King Boo and free all his friends. He also offers to help the ghosts rebuild the then-recently destroyed Last Resort complex, providing construction hard-hats to Luigi and some of the ghosts (although a Hammer obliviously eats his). After the hotel is rebuilt, Professor E. Gadd stays behind with Gooigi and the ghosts while everyone else departs.


Boo Canister

A device created by E. Gadd with the aid of the Mario Bros. which is designed to contain captured Boos. It is stored in the Bunker's Vault.

DS Time Radar

A handheld device that bears a striking resemblance to a Nintendo DS used briefly by E. Gadd to find Princess Peach in Mario & Luigi: Partners in Time. It has the ability to pinpoint which time period someone is trapped in. One of the Toads thinks he just made it up. Also, when Professor E. Gadd turns on his Hydrogush 4000, he uses a DS-like device.

Dual Scream

An upgraded DS given to Luigi in Luigi's Mansion: Dark Moon.

E. Gadd Battle Machine

Special parts that can be bought in the Super Duel Mode of Mario Party 5. They include the E. Gadd body, E. Gadd Jet, E. Gadd Engine and E. Gadd gun.

E. Gadd's Garage

E. Gadd's garage is the garage he had in Mario Party 6. He also keeps his numerous inventions there. It also appears as a Rare Mini-Game.


Electronic portals in Luigi's Mansion: Dark Moon that can be used to transport people and things from one place to another. Comes in a pair, but only one of them has a panel on the top that must be turned on with a Strobulb flash for both to be activated.

F.L.U.D.D., from Super Mario Sunshine.

The Flash Liquidizer Ultra Dousing Device, better known as F.L.U.D.D., is a water-spraying device used by Mario in Super Mario Sunshine. It is worn on Mario's back, and has various nozzle attachments which can be collected by breaking open boxes with E. Gadd's logo on the front. F.L.U.D.D. also has notable artificial intelligence and the ability to communicate with a voice. In certain ways, F.L.U.D.D. functions much as Navi did in The Legend of Zelda: Ocarina of Time.


The Gaddgets appeared in Mario Party Advance. There were 80 total, and were very similar to the toys in the WarioWare games.


A flashlight that is used to scare away Boos when they try to steal a Star or coins in Mario Party 4.

Game Boy Horror

The Game Boy Horror is a portable device from Luigi's Mansion that bears a striking resemblance to the Game Boy Color containing a built-in camera which E. Gadd can use to watch the action from the safety of his lab and contact Luigi. It also stores data including a map and anything Luigi has collected, and contains a special radar called the Boo Radar to find hidden spherical objects.

Game Boy Horror SP

The Game Boy Horror SP is a upgraded version of the Game Boy Horror, given to Mario by E. Gadd in Mario & Luigi: Superstar Saga. It is another portable device, this time bearing a striking resemblance to a Game Boy Advance SP. It always gives the Bros. access to rare items in battle.

Ghost Container

A machine that holds the ghosts captured in Evershade Valley and the ScareScraper in Luigi's Mansion: Dark Moon. It also provides research information on all captured ghosts including their spectral mass (weight).

Ghost Gown

A pale blue jacket that, when worn, turns characters into a ghost. When E. Gadd wore this in Mario & Luigi: Superstar Saga, Luigi got scared and used the Poltergust 3000 to vacuum him up.

Ghost Portrificationizer

The Ghost Portrificationizer is a large machine which works in conjunction with the Poltergust 3000. Certain ghosts captured can be entrapped in portraits to be hung in E. Gadd's gallery. The machine also works in reverse, which was utilized to free Mario from the painting he had been trapped in by King Boo. E. Gadd also commented that it took him twenty years to build.


Gooigi is the result of an accidental combination of ghost ectoplasma and coffee. With testing, Gooigi was able to take on the form of Luigi and was sent back in time to the events of Luigi's Mansion Nintendo 3DS.


A vault E. Gadd made to contain the ghosts of Evershade Valley and the ScareScraper in Luigi's Mansion: Dark Moon. It holds the Boo and Ghost Containers, a machine where Gemstones and their statues are stored, as well as a device which displays Poltergust 5000 upgrades, and a Bank Vault where treasure is stored and tallied.

Hydrogush 4000

A large water pump used in Mario & Luigi: Partners in Time. It's not portable like the F.L.U.D.D., but it does have a lot of power.

Magic Orb

A magic wand in Mario Party 7, which has the E. Gadd logo on it. It is exclusive to Boo and Dry Bones. It was used to turn the characters invisible, making them impervious to traps, and to double their rolls on Dice Blocks for two turns.

Magic Paintbrush
Bowser Jr. holding the Magic Paintbrush.

The Magic Paintbrush is used by Bowser Jr. (as Shadow Mario) in Super Mario Sunshine. It is a large paint brush with the ability to paint various colors, though this magic paint can change the landscape, create portals, and create obstacles or enemies. It is unclear why the brush was made as well as why it was given to Bowser Jr., though some fans claim he stole it or E. Gadd was tricked by Bowser Jr. using his Mario costume. In Mario Power Tennis, Mario Hoops 3-on-3, Mario Super Sluggers, and Mario Sports Mix, Bowser Jr. uses his Magic Paintbrush to perform special moves.


A device that allows E. Gadd to detect and measure distant paranormal signals and pieces of the Dark Moon from his Bunker in Luigi's Mansion: Dark Moon.


E. Gadd uses the Pixelator to send Luigi, and his Toad assistants, from the various mansions in Luigi's Mansion: Dark Moon.

Poltergust 3000
The Poltergust 3000.

The Poltergust 3000 is a modified vacuum cleaner designed to entrap ghosts. It also has a "blow" function which allows it to expel elements it sucks up such as fire, water, and ice. Luigi uses this in Luigi's Mansion to defend himself from the many ghosts; it also makes a return in Mario Power Tennis where Luigi uses it as his defensive Power Shot, using its suction power to retrieve the ball. It also appeared as trophies in Super Smash Bros. Melee and Super Smash Bros. Brawl. The Poltergust 3000 is also used by Luigi in Mario Sports Mix for his special ability.

Super Poltergust 3001
E. Gadd on the Super Poltergust 3001.

The Super Poltergust 3001 is an advanced version of a Poltergust 3000. It has the same functions as the Poltergust 3000, but is much larger thereby allowing it to be ridden on. When ridden, it hovers over the ground. It is capable of moving at high speeds. E. Gadd briefly uses it in Mario & Luigi: Superstar Saga.

Poltergust 4000
Luigi, in the Poltergust 4000.

The Poltergust 4000 is one of the vehicles used by Luigi in Mario Kart DS to race in. It is similar to the Super Poltergust 3001, though it does not float. The "barrel" of the car is the area Luigi sits on, and the nozzle rests on the ground. Emblems are placed on both sides of the barrel.

Poltergust 5000

A vacuum that Professor E. Gadd creates for Luigi to vacuum up more ghosts in Luigi's Mansion: Dark Moon. It is a successor to the Poltergust 3000 and it creates a large circular sucking motion rather than the small sucking motion from the first game, making it a lot easier to defeat multiple ghosts at once. There are also different accessories designed for the Poltergust 5000, such as the Strobulb and the Dark-Light Device.

Poltergust G-00
The Poltergust G-00 in Luigi's Mansion 3

The Poltergust G-00 is Luigi's Vacuum in Luigi's Mansion 3. This one retains the strobulb, and can fire a toilet plunger to help pull certain things, and can summon Gooigi.

Robo Mario

This robotic entity of Mario races against players in the Rainbow Cup challenge game in Mario Kart Arcade GP 2. It spawns an infinite number of items and changes items depending on its place.

Starbeans Café

The café in the Beanbean Kingdom, founded and owned by E. Gadd. It does not have any toilets. At one point, E. Gadd puts up a larger-than-life-size portrait of himself. Every time Mario and Luigi mix a new drink, E. Gadd visits.


An intelligent suitcase used by the Mario Bros. on their quest in Mario & Luigi: Partners in Time. Its purpose is to manage the brothers' inventory and display their current status. It also helps the brothers by activating the Shroob Saucers that are used in the game, and eventually near the end develops the ability to return to the past before rescuing Princess Peach. It is known to use large and overly complex made-up words when he speaks, and upon ending its speeches, says "BACK TO ADVENTURE!"

Time Machine

Used by Princess Peach to visit the past at the beginning of Mario & Luigi: Partners in Time. It is powered by the Cobalt Star. It breaks at the beginning of the game but is repaired after the Shroobs are defeated. A device resembling a Time Machine also appears in the lab of Luigi's Mansion 3.

Vacuum Orb

A vacuum from Mario Party 7. It is a capsule item exclusive to Wario and Waluigi. It doesn't look much like the Poltergust 3000. Rather, it is yellow and purple (much like the two characters that use it), and features the E. Gadd logo. It is used to steal coins from other players.

Virtual Boo

An item from Luigi's Mansion 3 that allows Luigi communicate with E. Gadd, check the map, and the pause screen. E Gadd also refers to it as the "VB".


For this subject's image gallery, see Professor Elvin Gadd/gallery.

Website Bios for Luigi's Mansion: Dark Moon

"Known for his paranormal research and plethora of wild inventions, Professor E. Gadd just needs someone crazy enough to put them to the test."
"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."

Bios for Luigi's Mansion 3

  • 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!"

List of appearances by date

Main article: List of Professor Elvin Gadd Appearances

Names in Other Languages

Language Name Meaning
Japanese オヤ・マー博士
Oya Mā Hakase
オヤ・マー (Oya Mā) come from "oh my!" and 博士 (hakase) means "professor" or "doctor"
Also a tribute to Nintendo designer Yoshiyuki Oyama[2]
Chinese 哎哟•喂博士 (Simplified)
Āiyō•wèi Bóshì
哎唷•喂博士 (Traditional)
Āiyō•wèi Bóshì
Localization of the Japanese name
哎哟\哎唷 ("Āiyō") means "uh-oh" and ("wèi") means "hey". 博士 ("bóshì") means "professor".
Dutch Professor Klemens Wibus Pun on kwibus, meaning "strange man"
French Professeur Karl Tastroff Pun on catastrophe
German Professor Immanuel Gidd Pun on igitt, meaning "ick", "ugh" or "yuk"
Italian Professor Strambic Strambic is a corruption of strambo, meaning "weirdo" or "wacky"
Korean 아라따박사
Aratta Baksa
아라따 ("aratta") is a corruption of 알았다 ("aratda"), meaning "all right" and 박사 ("baksa") means "doctor"
Portuguese Professor Anacleto Luado Pun on aluado, meaning "moonstruck" or "lunatic"
Russian Профессор П. У. Галкин
Professor P. U. Galkin
Pun on пугать ("pugat"), meaning "to scare"
Spanish (Americas) Profesor D. Sastre Pun on desastre, meaning "disaster"
Spanish (Europe) Profesor Fesor Literally "Professor Fessor", Fesor is from Profesor with the first three letters removed


  • In The Super Mario Bros. Super Show! episode "Robo Koopa", there is a scientist named Dr. Nerdnick who bears a passing resemblance to E. Gadd due to their similar appearance and the fact that they both speak in incomprehensible gibberish.
  • In Super Smash Bros. Brawl, one of the names that can appear when a player presses the random button in naming their custom stage is "EGADD".
  • Glasses with swirls are often seen in Japanese media[3] that are a feature E. Gadd shares with Professor Frankly, Fawful, Francis, and Iggy Koopa.
  • Occasionally, Professor E. Gadd's voice-overs will include "Oyamaa", which is both his Japanese name and an exclamation of surprise. This happens even in overseas releases.


  1. ^ (Accessed on 6-12-09)
  2. ^ As stated in the "Inside Zelda: Yoshiyuki Oyama, Monster Designer" article featured in Nintendo Power Issue 201.
  3. ^ The Mushroom Kingdom (Accessed on 6-12-09)