Yu-Gi-Oh! GX Terminology

Bio-Bands
Bio-Bands, known in Japan as "Death-Belts" (Japan pronounciated as Des Belts) were given to the students at Duel Academy by Professor Cobra (Professor Viper) to monitor their progress while dueling. It collects duel data, fighting spirit, concentration, and the decisions of a player to the center operation lab where SAL (Wheeler) was once trained. If the result shows that the student doesn't sustain sufficient fighting spirit, he or she will be degraded and finally kicked out of the school. It is later discovered that they absorb the energy of the duelist while they are dueling, and the energy is used to resurrect Yubel. The amount of energy drained varies; the duelists might not even notice it if it's on a low setting, but on higher settings it can cause them to collapse from exhaustion, or even die.

Devil Arm
The Devil Arm is a mysterious arm that was found by Professor Viper on one of his expeditions. It has the ability to see the dark thoughts of any person's mind. Only those with evil in their hearts may control it. The devil arm is actually the only part of Yubel that wasn't destroyed when she was launched into space by Jaden when he was a child.

Duel Academy


Duel Academy is the setting of most of Yu-Gi-Oh! GX. It is a school that trains duelists to become professionals. It has three dorms: Slifer Red, Ra Yellow, and Obelisk Blue. It is owned by Seto Kaiba.

Duel Zombie
A person who is stripped of their free will and thoughts. A duel zombie has only one purpose: Dueling. When a Duel Zombie is defeated in a duel they will get back up and repeatedly challenge the opponent to a duel. Once the opponent falls from exhaustion they become a Duel Zombie themselves. This makes Duel Zombies nearly impossible to defeat unless their controller is defeated. If that occurs upon a Duel Zombie's next defeat they return to normal.

Electrodes
Electrodes, known in Japan as Shock-Amplifying Devices are a kind of "collar" used in underground duels. They were first shown when Zane dueled against Mad Dog in an attempt to gain more power. When a duelist loses life points while wearing an electrode, a severe electric shock is sent through their body causing them great pain. After his duel with Mad Dog, Zane used them again in a duel against his younger brother Syrus. Frequent use of electrodes can caused someone to develop a severe heart condition, usually ending in death. The only known case of this is with Zane who presumably used the electrodes in several other duels not shown in the anime.

Eye of Orichalcum
The Eye of Orichalcum is an artificial eye attached under the bandage of Jim's right eye. He got this eye in an accident as a child when he tried to save Shirley from an animal trap and fell into a river. There was a mysterious old man who told him that the Eye of Orichalcum would help Jim whenever he wanted to save his friend. Jim later uses the power of the eye to see into Jaden's dark mind and find his heart that was controlled by the words of the Supreme King. Therefore, he tries to pull Jaden out of the darkness in a duel. However, Jaden can't hear Jim's words and defeats him violently. Later on, the Eye of Orichalcum is transferred to Axel Brodie.

Genex tournament
The Genex Tournament, or GX tournament, was an event created by Chancellor Sheppard during Jaden's 2nd year at Duel Academy. It showed duelists such as Prince Ojin (a prince whom lost his country's Satellite Cannon to Sartorius after being subjected to the dreaded First Turn Kill), a reappearance by Blair (a young duelist appearing at Duel Academy with the hope of winning the tournament and getting into Slifer Red), Lucien Grimley (a duelist from North Academy who sold his soul to The Grim Reaper in exchange for drawing power), Frantz (an ex-card designer/duelist whom lost his job to Chumley and afterwards appeared at Duel Academy with a copy of The Winged Dragon of Ra, only to get beaten by Jaden thanks to Skyscraper 2 - Hero City, a card which Chumley had designed for him), and many others. Chazz was eventually declared the champion of the Genex tournament after defeating Blair Flannigan.

Genex Medallion
A Genex Medallion, known in Japan as  a Genex Medal''' are the tokens for how many wins a duelist has in the Genex tournament.

Light of Destruction
The Light of Destruction, known in Japan as The Light of Ruin, is a malevolent extraterrestrial being that possessed Sartorius when he first came into contact with the Ultimate D card. Highly infectious and dangerous, the Light of Destruction wreaks unholy havoc on the world in the second season. For billions of years, a white hole releases a mysterious energy called the Light of Destruction. When this energy reaches Earth, it causes several calamities such as dictatorships and wars. Ten years before the events of the second season, the Light of Destruction was released, infecting a card created by Aster's father, Destiny Hero - Plasma. When The D, known as Kyle Jables at the time, acquires the card by kidnapping (murdering in the Japanese version) Aster's father, it possesses him, causing him to develop an uncaring and sadistic personality. Afraid of what is happening to him, The D consults with a fortuneteller named Sartorius, who becomes possessed as well. After possessing Sartorius, it sets the stage for the events of the second season by amassing a cult of brainwashed students and acquiring a mind-control satellite which it attempts to use to enslave the planet. In the Japanese version the satellite was a weapon that it planned to use to destroy all life on earth. It is ultimately sealed away, freeing Sartorius from its influence, due to the efforts of Jaden and Aster.

Although it didn't play much of role in the third season, it's eventually revealed that Yubel came into contact in with The Light of Destruction while it was in space, which gave Yubel it's power, and effected its sanity, although it didn't control like it was able to control Sartorius. It's also revealed that Jaden had always been the one destined to defeat the Light, Yubel being specifically created to protect Jaden's past self Haou the Supreme King until he was old enough to utilize his innate power to do so.

Misgarth
The Misgarth Kingdom was the royal family of Prince Ojin. They were responsible for sending the brainwashing satellite, which Sartorius intended to use to turn the world into members of the Society of Light, into space. In the Japanese version the satellite was a weapon that could destroy all life on the planet (in the English Dub, even the what the satellite does is changed, the footage of the fires starting when it starts to blast the earth isn't edited out).

Satellite Keys
The Satellite Keys are two keys Sartorius was awarded by Prince Ojin upon winning their duel. In due time, Sartorius' good side hands over the keys to Jaden and Aster for safekeeping.

Shadow Charm
The Shadow Charms are talismans used by the Shadow Riders. There are Eight in total, one for each of the Shadow Riders, and one for Kagemaru himself. Although their origins are unknown, they seem to have powers similar to the Millennium Items, and are, in turn, all emblazoned with the Wjat Eye. Being noticeably less important to the story than their afore-mentioned counterparts, the nature of their powers are not deeply explored, but all of them seem to serve the purpose of their respective owner, although they appear less powerful then the Millennium Items. All of them allow the user and his/her opponent to participate in a Shadow Game. Kagemaru alone seems to understand the nature of these items, and is responsible for their distribution.


 * Nightshroud/Darkness - His Shadow Charm is actually half of the pendant owned by the Gravekeeper then Jaden. Whole or in parts, it seems to afford dark powers to the user, as well as a certain amount of protection and resiliance against the effects of Shadow Games, and other Shadow Charms.


 * Camula - Camula's Shadow Charm is a choker which allows her both to claim the souls of those who lose to her and place them inside voodoo dolls as well as the ability to wager the souls of others present (even players outside the game) as fodder for her Illusion Gate Spell Card.


 * Don Zaloog - His Shadow Charm is his eyepatch. It allows him and the rest of the Dark Scorpions to take physical form in the human world. Without it, they become Duel Spirits once again.


 * Tania - Her Shadow Charm takes the form of a gauntlet. This allows her to assume human form (her true form being a tiger).


 * Abidos the Third - His Shadow Charm is a headband that allows him to return from the afterlife and assume physical form.


 * Titan - His Shadow Charm is the new mask he wears. It allows him to channel the powers of darkness as well as affording him a certain mastery over it. Deprived of it, however, he is consumed by the darkness once again.


 * Amnael - His is the Emerald Tablet, the only Shadow Charm with a history that is not exclusive to the Yu-Gi-Oh! universe. It's fictitious version allows Amnael to trap his victims, soul and body, inside its pages, trapping them until he is defeated.


 * Kagemaru - The master of the Shadow Charms' iconic item is a small ring which allows him to channel the powers of the Sacred Beasts into himself, not only regaining his youth but also receiving an exponential increase in both physical strength and magical power.

Spirit Gates
The seven Spirit Gates are gates hidden deep below the Duel Academy, used to protect the Sacred Beasts. They can only be opened by obtaining the seven Spirit Keys, which can only be won in a duel. Nearing the end of the first year of Duel Academy, the gates are opened, and Kagemaru announces that the gates can be opened by possessing enough dueling spirit.

Spirit Keys
When inserted into their respective keyholes in the Spirit Gate, the seven Spirit Keys allow access to the Sacred Beasts. Sheppard gave one key to the seven top duelists in the academy: Chazz, Bastion, Jaden, Alexis, Crowler, Zane, and Banner.

Spirit Partner
Spirit Partners are Duel Monster Spirits that have human partners. Their partners and any other humans that possess the ability are the only humans who can see and interact with them. It’s also possible to have more than one spirit partner. The following characters own or have the ability to sense a Duel Monster in one way or another:


 * Jaden’s main spirit partner is Winged Kuriboh. Later on, he’s also able to verbally communicate with the Neo-Spacians as well as Elemental Hero Neos.


 * Chazz’s main spirit partner is Ojama Yellow in the anime, and Light and Darkness Dragon in the manga. However, he is also able to see the other two Ojamas that make up the The Ojama Trio, The Dark Scorpions, as well as all the monsters in his 0-ATK deck.


 * Jesse’s main spirit partner is Crystal Beast Ruby Carbuncle. He’s also able to interact with the rest of the Crystal Beasts plus the ones floating around such as Tom’s Jerry Beans Man. He also considers all of his monsters his family.


 * In the GX manga, Kouyou Hibiki is the original owner of Winged Kuriboh before passing it down to Jaden. He too, is able to communicate with his duel spirit.


 * Chumley has Des Koala as his spirit partner.


 * Trapper doesn’t possess a spirit partner of his own, but nonetheless, wields the uncanny ability to not only see, but also trap duel spirit monsters.


 * Mr. Stein has the ability to only see his own monster, "Scab Scar-Knight".


 * Though Sartorius can not see visually see nor speak to duel spirits, he is able to sense them due to his honed psychic abilities.


 * Yubel may be considered a Spirit Partner, though the relationship it shares is mostly parasitic and/or downright harmful to all who come into contact with it, so this is debatable. Notably, however, it does afford great power to those who ally with it, although it often turns on its allies when it has no further use for them.

Survival Duels
Survival Duels, known in Japan as "Death-Duels" (Des Duels in Japan pronounciation) are mandatory duels issued by Professor Cobra (Professor Viper) in the third season where the Bio-Bands drain both the victor and loser's energies upon the conclusion of the duel. It is the skill system for open duels regardless of dorms or grades.

Ultimate D - Card


The Utlimate D - Card is the commonly used nickname for "Destiny Hero - Plasma". "D" stands for Destiny. In the English dub when not being referred to by name Plasma is referred to as "The Ultimate Destiny Card" by The D. First introduced into the anime by a defeated Sarina, Aster invests most of his time and energy into finding this mysterious card that was stolen from his kidnapped (murdered in the Japanese version) father during the Genex tournament. His efforts eventually lead him to The D who reveals that the Ultimate D - Card drains the souls of its victims, as seen with Aster's father and Doctor Collector. Also, he learns that the Light of Destruction infected this card, and will also infect anyone who comes in close contact with it, tying Aster's predicament to the possessed Sartorius. Upon defeating The D, Aster manages to purify the tainted card from the Light of Destruction. Afterwards, "Destiny Hero - Plasma" becomes the centerpiece to his Destiny Hero Deck.