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Official Site: Toei Animation

The 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 first 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 and as acting leaders. Based in , an elite high school built in the middle of Tokyo's , the Death Busters work to gather human souls which would prolong their dying homeworld. Their ultimate goal is the revival of their commander so they can bring their master to Earth and terraform it into a new home at the cost of the current life forms.

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 discards 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 . 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 first 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.

Nekonneru has not been a contender in any CBUB matches.