Professor E. Gadd's Research Journal

Logo with entry selection (current)

Professor E. Gadd's Research Journal is a series of stories written in journal format on the official Luigi's Mansion website. In it, Professor E. Gadd logs the accidental discovery of the green slimy chemical element "Goo," the subsequent creation of Gooigi from said element and the various experiments conducted to perfect him. The stories in the journal take place during the events of Luigi's Mansion: Dark Moon up until shortly before the events of Luigi's Mansion 3.

Entries

Note: For the European language variants for countries such as the UK and Ireland, each entry on the website is numbered as "01:", "02:" etc. instead of "XXX-001", "XXX-002" etc.

XXX-001 An Accidental Discovery

E. Gadd begins by making a short introduction on a "strange liquid energy" collected from ghosts he had befriended. He posits that said energy is "the key to many, many new inventions," but admits that he initially struggled to uncover its uses. His failed experiments with the energy included poking it with iron, pouring it on rubber, and even absent-mindedly dipping a donut into it.

The professor recounts that later during his research, he was startled by a Hider ghost that had escaped from its confinement, causing him to spill the coffee he was drinking into a vial containing ghost energy. He claims that the coffee, described as a "Lunoman Greenie blend from Evershade Valley," quickly reacted with the energy inside the vial, leading to the creation of a green viscous substance. E. Gadd recognized the substance as a new chemical element and called it "Goo," which he then assigned the "00" entry in the periodic table.

Pictures

• 

  Evershade Valley, which hosts a large concentration of ghosts

• 

  E. Gadd researches the liquid energy extracted from a Hider

• 

  E. Gadd is scared by a Hider and spills his coffee into a vial with ghost energy

• 

  E. Gadd watches the ghost energy react to the coffee

XXX-002 Characteristics of "Goo"

E. Gadd writes that he wishes to discover the real-life uses of "Goo", and decides to perform various experiments on it. He first tested fire on the Goo. The substance was melted, revealing a weakness to fire. The professor followed up by spraying water on the Goo, which yielded the same result. However, E. Gadd notes that the bits of Goo which did not touch the water had moved away from the hazard.

The professor also tells that he has discovered other unusual properties of Goo. He reveals that Goo will push back when touched, as well as react to sounds such as music. E. Gadd concludes that Goo is able to react to outside stimulation, and writes that he believes there is a greater purpose for this new element.

Pictures

• 

  E. Gadd testing fire on the Goo

• 

  E. Gadd testing water on the Goo

• 

  The Goo reacting to E. Gadd's water test

• 

  E. Gadd playing music to the Goo

XXX-003 The Birth of Gooigi

E. Gadd writes that he could teach Goo to collect ghosts with his invention, the Poltergust 3000. He first created a mold that he could pour Goo into a humanoid form. When he removed the mold, Goo was in a human shape, but returned to its original form moments later. The professor then used the Pixelator that contains Luigi’s biological data and converted it into an electrical signal. He then was able to input the signal into the Goo. The result was that the Goo has shape-shifted into a green copy of Luigi.

E. Gadd then showed the Goo some footage of Luigi catching ghosts. The Goo began to imitate Luigi’s movements, and even grew a perfectly functional replication of the Poltergust out of its body. E. Gadd decided to call it "Gooigi" and felt determined to find the perfect place to test "his" ghost-hunting abilities.

Pictures

• 

  The Goo assumes human shape

• 

  The Goo receives Luigi's biological data

• 

  E. Gadd examines the newly-created Gooigi

• 

  E. Gadd and Gooigi watch footage of Luigi catching ghosts

• 

  Gooigi mimics Luigi's actions from the seen footage while E. Gadd studies him

• 

  E. Gadd admires Gooigi

XXX-004 That Nostalgic Mansion

E. Gadd admits that he had difficulty in thinking about an optimal place where Gooigi could be tested out. He also had to come up with a plan to obtain more ghost energy from beyond Evershade Valley in order to confer Gooigi paranormal capabilities. As he pondered a solution, he realized that he could send Gooigi to the mansion where he originally worked with Luigi. However, since the mansion had vanished long before, E. Gadd had to program his Pixelator so that it could connect to the past and make revisiting the mansion possible. In this way, he contacted himself and Luigi from the past, asking them for help, and outsourced Gooigi to them afterwards.

When he contacted Gooigi after a while for a check up, he discovered that he was very successful in his tests and had collected a large amount of ghosts. As a final note, E. Gadd writes that he is thinking about other possible interactions between ghost energy and Goo.

Pictures

• 

  The eponymous "Nostalgic Mansion"

• 

  Three ghosts

• 

  E. Gadd gives instructions to Luigi and his past self before outsourcing Gooigi to them

• 

  E. Gadd looks at the ghosts that Gooigi collected

• 

  E. Gadd thinking about possible experiments with ghost energy and Goo

XXX-005 A New Power

Professor E. Gadd writes that he began his research in improving Gooigi's qualities "beyond that of a normal person" with the large ghost supply obtained by Gooigi from the original Luigi's Mansion. As he analyzed the ghost energy, he discovered that ghosts from the original mansion were structured differently from those in Evershade Valley and it became clear to him that there are various types of ghost energy based on their molecular structure. E. Gadd remembers that he still needed a way to benefit Gooigi from the new discovery, and since Goo is different enough from ghost energy, he would not be able to give him ghostly properties like vanishing or going through solid walls.

E. Gadd knew that Gooigi's viscosity could be significantly enhanced to enable him to slip through tight spaces; however, he needed the optimal mix of ghost energy applied to Gooigi. He then began testing various mixtures of ghost energy and Goo. Most of the experiments either had no effect on Gooigi or had negative side effects, either preventing him to take on his humanoid form or making him more rigid and preventing him from moving. After many more tests, the final formula let Gooigi retain his form while still giving him a fluid quality, allowing him to pass between bars. Satisfied by the success of this experiment, E. Gadd decided to take a break with a cup of Lunoman Greenie coffee blend.

Pictures

• 

  E. Gadd analyzing various types of ghost energy

• 

  E. Gadd thinking about the properties Gooigi could gain from ghost energy

• 

  E. Gadd realizing that Gooigi's viscosity could be improved to allow him to slip through tight spaces

• 

  E. Gadd mixing various types of ghost energy

• 

  Gooigi becoming more stiff after his molecular structure was altered during experimentation with ghost energy mixtures

• 

  E. Gadd finding the mixture that would make Gooigi more fluid

• 

  Gooigi successfully slipping through grates after E. Gadd applied the newly-found mixture

XXX-006 Gooigi's Weaknesses

E. Gadd began his research into addressing Gooigi's vulnerability to fire or water. After reducing the density of the Goo to no avail, he then attempted to increase the density instead. However, he was startled by Polterpup, causing him to spill the compound onto his head. The compound began to harden and cause E. Gadd to suffocate, but he was quickly able to run to the shower and wash it off with water.

After performing many tests, E. Gadd eventually realized that eliminating Gooigi's weaknesses was a task beyond even his own expertise, but his experiments had at least subtly improved Gooigi's viscosity. E. Gadd summed up the results of his tests:

1. While Gooigi can still dissolve by being directly burned or soaked, he can withstand steam and vapor.
2. Gooigi can withstand light physical attacks, but cannot endure powerful blows.
3. Gooigi is capable of applying subtle forces to objects, such as opening drawers and treasure chests, but cannot perform actions such as turning doorknobs.

Still traumatized by his near-death experience, E. Gadd sipped a cup of Lunoman Greenie coffee as he pondered his next experiment.

Pictures

• 

  E. Gadd experimenting with Goo and fire

• 

  Polterpup causing E. Gadd to spill Goo compound on his face

• 

  E. Gadd washing off the Goo compound

• 

  Gooigi seeping through grates

• 

  Gooigi dissolving from contact with water

• 

  Gooigi losing his consistency as he is hit with a giant hammer

• 

  Gooigi failing to push a door handle, as this requires applying more force than he can apply

XXX-007 Gooigi's Completion

E. Gadd noted that Gooigi had a tendency to scare ghosts away, which made him inefficient in catching and collecting them. By taking precise control of Gooigi, E. Gadd could eradicate the issue.

At first, E. Gadd implanted a communication chip inside Gooigi to enable him to give Gooigi directions via a controller. This method proved successful at first, but after a while E. Gadd started facing issues with the remote, one of which was being unable to stop Gooigi's Poltergust from vacuuming once it was started. This later led to E. Gadd getting his head pulled inside the Poltergust's nozzle, with no apparent way to escape; however, he accidentally kicked a bucket of water and a mop onto Gooigi, which promptly melted him and let E. Gadd go.

Shortly after the incident, E. Gadd abandoned the previous idea and realized that he could use his own consciousness to control Gooigi more easily. He thus equipped the new Poltergust G-00 with a sensor that would make this possible once Gooigi was unloaded from the Poltergust. This caused him to enter a "sleep-like state", which he describes as a "minor hindrance at best", as he could quickly swap the consciousness back between Gooigi and him when in danger. At this point, E. Gadd considered Gooigi to finally be complete.

E. Gadd decided to enjoy a cup of Lunoman Greenie coffee in celebration of Gooigi's completion, when he received a letter from the owner of a luxurious hotel. The owner addressed in the letter that she would let E. Gadd stay at the hotel free of charge and offer her entire collection of ghosts in exchange for personally seeing King Boo, whom E. Gadd had kept in containment in his vault since Luigi's previous adventure. Enthusiastic for this chance, E. Gadd loaded the Poltergust G-00 and the canister containing King Boo into his car and drove to the hotel, setting the events of Luigi's Mansion 3 in motion.

Pictures

• 

  Gooigi scaring off a ghost

• 

  E. Gadd controlling Gooigi with a remote

• 

  Gooigi sucking up E. Gadd with his Poltergust

• 

  E. Gadd kicking a mop and a bucket of water, spilling it over Gooigi

• 

  E. Gadd thinking about using his consciousness to control Gooigi

• 

  Depiction of the Poltergust G-00's ability to store and unload Gooigi

• 

  E. Gadd asleep, having transferred his consciousness to Gooigi

• 

  E. Gadd reading the invitation to a luxurious hotel

• 

  E. Gadd on his way to the Last Resort, with the Boo Canister at the back of his car

Gallery

• 

  Screenshot of the website prior to changing its focus to Luigi's Mansion 3

• 

  Screenshot of the website, where the element Goo can be seen clumsily added in the periodic table

• 

  Play Nintendo thumbnail

• 

  Play Nintendo thumbnail

Doodles and scribbles

• 
• 
• 

  Combining ghost energy with "Lunoman Greenie" coffee results in Goo

• 

  The periodic table, as it appears in the journal

• 
• 
• 

  A doodle suggesting that water can disintegrate Goo

• 
• 

  A diagram of Gooigi

• 
• 

  A doodle of a Gold Ghost next to some notes

• 

  A doodle showing E. Gadd's intention to program the Pixelator so that it connects to the past

• 
• 
• 
• 
• 
• 
• 

  Some notes and a doodle suggesting that certain types of ghost energy, when mixed, cause Goo to become rigid

• 

  Some notes and another doodle that shows which mixture confers Goo fluid properties

• 

  Some notes and a doodle showing the resulting fluid Goo passing through grates

• 
• 
• 
• 
• 
• 
• 
• 
• 
• 

  Some notes related to the controller used by E. Gadd to give Gooigi directions

• 

  Some notes related to Gooigi

• 

  Some notes related to the Poltergust G-00

• 

  A sketch of The Last Resort invitation received by E. Gadd

• 

  Some notes and a sketch of E. Gadd's car

Names in other languages

Language	Name	Meaning
Japanese	オヤ・マー博士の研究日誌 Oya Mā Hakase no kenkyū nisshi	Professor E. Gadd's research diary
Dutch	Onderzoeksrapport van professor K. Wibus	Professor E. Gadd's research report
French	Journal de recherche du professeur K. Tastroffa	Professor E. Gadd's research journal
German	Professor I. Gidds Forschungstagebuch	Professor E. Gadd research journal
Italian	Appunti di ricerca del Professor Strambic	Professor E. Gadd's research notes
Portuguese	Diário de pesquisas do Professor E. Gadd	Professor E. Gadd's research journal
Russian	Дневник исследований профессора П. У. Галкина Dnevnik issledovaniy professora P. U. Galkina	Professor E. Gadd's journal of research
Spanish	Diario de investigación del profesor Fesor	Professor E. Gadd's research journal

XXX-001 An Accidental Discovery

Language	Name	Meaning
Japanese	XXX-001：偶然の産物 XXX-001: Gūzen no sanbutsu	XXX-001: An accidental product
Dutch	01: Een toevallige ontdekking	01: An accidental discovery
French	01 : Une découverte accidentelle	01: An accidental discovery
German	01: Eine zufällige Entdeckung	01: An accidental discovery
Italian	01: Una scoperta accidentale	01: An accidental discovery
Portuguese	01: Uma descoberta acidental	01: An accidental discovery
Russian	01. Случайное открытие 01. Sluchaynoye otkrytiye	01. Accidental discovery
Spanish	01: Un descubrimiento por accidente	01: A discovery by accident

XXX-002 Characteristics of "Goo"

Language	Name	Meaning
Japanese	XXX-002：“グー”の特性 XXX-002: "Gū" no tokusei	XXX-002: Characteristics of "Goo"
Dutch	02: Eigenschappen van "goo"	02: Properties of "goo"
French	02 : Les propriétés du « Gluant »	02: Properties of "Goo"
German	02: Eigenschaften von „Glibber“	02: Properties of "Goo"
Italian	02: Caratteristiche del "Goo"	02: Characteristics of "Goo"
Portuguese	02: Características do "Goo"	02: Characteristics of "Goo"
Russian	02. Свойства элемента Goo 02. Svoystva elementa Goo	02. Goo element properties
Spanish	02: Características del gominol	02: Characteristics of jelly

XXX-003 The Birth of Gooigi

Language	Name	Meaning
Japanese	XXX-003：グーイージの誕生 XXX-003: Gūīji no tanjō	XXX-003: The birth of Gooigi
Dutch	03: Het ontstaan van Gooigi	0: The birth of Gooigi
French	03 : La naissance de Gluigi	03: The birth of Gooigi
German	03: Die Entstehung des Fluigi	03: The creation of Gooigi
Italian	03: La nascita di Gommiluigi	03: The birth of Gooigi
Portuguese	03: O nascimento do Gooigi	03: The birth of Gooigi
Russian	03. Рождение Гуиджи 03. Rozhdeniye Guidzhi	03. Birth of Gooigi
Spanish	03: El nacimiento de Gomiluigi	03: The birth of Gooigi

XXX-004 That Nostalgic Mansion

Language	Name	Meaning
Japanese	XXX-004：懐かしのあの屋敷 XXX-004: Natsukashi no ano yashiki	XXX-004: That nostalgic mansion
Dutch	04: De villa van toen	04: The villa from then
French	04 : Le manoir de la nostalgie	04: The mansion of nostalgia
German	04: Die Villa von damals	04: The Villa of yesteryear
Italian	04: La villa che viene dal passato	04: The villa that comes from the past
Portuguese	04: A mansão do passado	04: The mansion of the past
Russian	04: Ностальгический дом 04: Nostal'gicheskiy dom	04: Nostalgic house
Spanish	04: La mansión de la nostalgia	04: The mansion of nostalgia

XXX-005 A New Power

Language	Name	Meaning
Japanese	XXX-005：新たな能力 XXX-005: Arata na nōryoku	XXX-005: A new ability
Dutch	05: Een nieuwe kracht	05: A new power
French	05 : Une nouvelle force	05: A new force
German	05: Eine neue Fähigkeit	05: A new ability
Italian	05: Un nuovo potere	05: A new power
Portuguese	05: Um novo poder	05: A new power
Russian	05: Новая способность 05: Novaya sposobnost'	05: New ability
Spanish	05: Un nuevo poder	05: A new power

XXX-006 Gooigi's Weaknesses

Language	Name	Meaning
Japanese	XXX-006：グーイージの弱点 XXX-006: Gūīji no jakuten	XXX-006: Gooigi's weaknesses
Dutch	06: Gooigi's zwakheden	06: Gooigi's weaknesses
French	06 : Les points faibles de Gluigi	06: The weak points of Gooigi
German	06: Fluigis Schwächen	06: Gooigi's weaknesses
Italian	06: I punti deboli di Gommiluigi	06: The weak points of Gooigi
Portuguese	06: Os pontos fracos do Gooigi	06: The weak points of Gooigi
Russian	06: Недостатки Гуиджи 06: Nedostatki Guidzhi	06: Disadvantages of Gooigi
Spanish	06: Los puntos débiles de Gomiluigi	06: The weak points of Gooigi

XXX-007 Gooigi's Completion

Language	Name	Meaning
Japanese	XXX-007：グーイージの完成 XXX-007: Gūīji no kansei	XXX-007: Gooigi's completion
Dutch	07: De voltooiing van Gooigi	07: The completion of Gooigi
French	07 : L'achèvement de Gluigi	07: The completion of Gooigi
German	07: Fluigis Fertigstellung	07: Gooigi's completion
Italian	07: L'ultimazione di Gommiluigi	07: The completion of Gooigi
Portuguese	07: O Gooigi está concluído!	07: Gooigi is completed!
Russian	07: Гуиджи готов! 07: Guidzhi gotov!	07: Gooigi is ready!
Spanish	07: Gomiluigi completado	07: Gooigi completed

Notes

^a - E. Gadd's French name ("K. Tastroff") is misspelled as "K. Tastrotff" on the journal's nintendo.fr link, but is spelled correctly on all other pages related to the journal.

External links

• North America: Professor E. Gadd's Research Journal. Accessed December 10, 2018.
• Japan: オヤ・マー博士の研究日誌. Accessed November 8, 2019.
• UK & Ireland: Professor E. Gadd's Research Journal. Accessed June 19, 2019.
• Spain: Diario de investigación del profesor Fesor. Accessed May 12, 2019.
• France: Journal de recherche du professeur K. Tastrotff. Accessed March 30, 2019.
• Netherlands: Onderzoeksrapport van professor K. Wibus. Accessed May 12, 2019.
• Germany: Professor I. Gidds Forschungstagebuch. Accessed May 12, 2019.
• Italy: Appunti di ricerca del Professor Strambic. Accessed May 12, 2019.
• Portugal: Diário de pesquisas do Professor E. Gadd. Accessed May 12, 2019.
• Russia: Дневник исследований профессора П. У. Галкина. Accessed May 12, 2019.