science

Death Busters

Death Busters is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Death Busters rather than just read about it. In short: The Death Busters (Japanese: デスバスターズ, Hepburn: Desu Basutāzu) are a group of fictional characters in the Sailor Moon manga series written by Naoko Takeuchi. This group comprises the villains of the third major story arc, which is called the Infinity in the manga, Sailor Moon S in the original anime adaptation, and Death Busters in Sailor Moon Crystal.

Key takeaways

Death Busters belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Death Busters to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Death Busters from memory before moving on to harder problems.

Reference excerpt

The Death Busters (Japanese: デスバスターズ, Hepburn: Desu Basutāzu) are a group of fictional characters in the Sailor Moon manga series written by Naoko Takeuchi. This group comprises the villains of the third major story arc, which is called the Infinity in the manga, Sailor Moon S in the original anime adaptation, and Death Busters in Sailor Moon Crystal. They are first introduced in chapter #27 "Infinity 1 – Premonition", originally published in Japan on July 7, 1994. In the Cloverway English adaptation, they are called the "Heart Snatchers". Originally from the "Tau Ceti Star System" in another dimension, the Death Busters acquire human host bodies to act through with Kaolinite and Professor Tomoe as acting leaders. Based in Mugen Academy (無限学園, Mugen Gakuen; Literally "Infinity Academy"), an elite high school built in the middle of Tokyo's Sankakusu District (三角州区, Sankakusu-ku; Literally "Delta District"), the Death Busters work to gather human souls which would prolong their dying homeworld. Their ultimate goal is the revival of their commander Mistress 9 so they can bring their master Pharaoh 90 to Earth and terraform it into a new home at the cost of the current life forms.

Key figures

Professor Tomoe Professor Souichi Tomoe (土萠創一教授, Tomoe Sōichi Kyōju) is the leader of the Death Busters and Hotaru Tomoe's father. A genetic scientist forced out of the scientific community for his unethical experiments, he sold his findings to companies and bought the entire Sankakusu District to continue his research to create "Super Beings". But a fire occurs in Tomoe's apartment that killed his wife Keiko and gravely wounded his daughter Hotaru. Tomoe saves his daughter by outfitting her body with cybernetic limbs during a freak storm that brought the Death Busters to Earth, the aliens apparently attracted to his darkness. Witnessing his assistant be reborn as Kaolinite, Tomoe sold his soul to Pharaoh 90 and willfully discarded his humanity by ingesting a Daimon Egg to become a hybrid as he began to build Mugen Academy while working to perfect the stability of Daimon/human hybrids. When Super Sailor Moon and the Outer Guardians arrive at his lab and dispatch his Daimon test subjects, Tomoe changes into his Daimon form Germatoid (ゲルマトイド, Gerumatoido). Sailor Moon is forced to kill him with her Rainbow Moon Heart Ache, Hotaru has briefly seen saying goodbye to her father while accepting that he died a long time ago after her mother's death. In the original anime, Hotaru's injury and the Death Busters' arrival occur at the same time. Professor Tomoe's story is the same with the exception that he was forcefully possessed by Germatoid. Tomoe also survives the ordeal as Germatoid leaves his body and is destroyed by Sailor Uranus and Neptune, attempting to reach Hotaru. Following the final battle, Tomoe loses his memories as he is entrusted with his reborn daughter's care until the season premiere of Sailor Stars, when Setsuna Meioh comes to retrieve her, and after that, he is not seen again in the series. Professor Tomoe appears in several musicals. In the Last Dracul arc, his body is possessed by an alchemist known as Undead Berserk (アンデッド・ベルセルク, Andeddo Beruseruku). Using Tomoe's laboratory, Berserk tries to create perfect homunculi in order to replace human beings; however, his first homunculi, the Death Mannetjes, turned out to be flawed creatures. Although Tomoe is possessed by Berserk, the latter shows concern for Hotaru. In Kessen / Transylvania no Mori (Kaiteiban) - Saikyou no Kataki Dark Cain no Nazo, the Amazoness Quartet, known as "Samael Quartet" in this revision, are homunculi created by Tomoe from Chibiusa's star seed. Professor Tomoe is voiced by Akira Kamiya in Sailor Moon S and by Takuya Kirimoto in Crystal. In the Cloverway Inc. English adaptation produced in association with Optimum Productions, he is voiced by Jeff Lumby, and the Germatoid creatures are voiced by a range of actors including Tony Daniels, David Fraser, and Steven Bednarski. In the Viz Media English adaptation, he is voiced by Keith Silverstein. In the musicals, he has been portrayed by Shunsaku Yajima, Ryuuji Kasahara, Kaname Aoki, and Yuuki Kaon.

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with Death Busters

Start with the simplest possible case. Write down what Death Busters claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Death Busters before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Death Busters ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Death Busters

In research: Death Busters appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Death Busters in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Death Busters is common in secondary-school and first-year university syllabi. It links to neighbouring topics Anime and manga characters introduced in 1994, Anime and manga characters who use magic, Anime and manga supervillains, so understanding it makes those chapters shorter.
In everyday life: Look for Death Busters outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Death Busters in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Death Busters means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Death Busters out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Death Busters in simple terms?

Why does Death Busters matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Death Busters?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Death Busters.