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Dr. Gross is supporting antagonist, being the posthumous antagonist of the Islands miniseries. She makes her first appearance in "Preboot." She creates hybrids of organisms, presumably her work is the opposite of extinction. Upon observing Susan's head implant, she seems intrigued, then surprised as she reads its serial number. After being restrained, Gross offers to tell Susan everything, but Susan flees without listening. The episode "Hide and Seek" revealed that she used to be a teacher for Kara (later Susan Strong) and other Seekers when the Seeker program was active.

After Martin Mertens seemingly disappeared from the island after bypassing the Guardian with Minerva's son, Finn, Dr. Gross sent her best seeker, Kara, to find and bring both of them back. While Minerva struggled to cope with the sudden loss and apparent betrayal of her son and husband, Dr. Gross began to conduct strange experiments in her lab, eventually releasing a deadly virus into the human population by accident. Her experiments lead to the permanent extinction of all Helpers. After Dr. Gross fled the island, Minerva chose to upload herself into the island's mainframe in order to restore order.

Quick Answers

What is the significance of Susan's head implant to Dr. Gross? toggle section
Dr. Gross, a human-robot hybrid, finds Susan's head implant significant due to her goal of cybernetically enhancing humans. The implant, once activated, grants Susan abilities like absorbing energy and increasing her size. Intriguingly, the implant wasn't Dr. Gross's creation, sparking curiosity about Susan's origins. The implant also prompts Susan to act robotically, designating Finn as her 'objective' and trying to transport him to the sea.
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What kind of organisms does Dr. Gross create? toggle section
In Adventure Time, Dr. Gross is a scientist who specializes in creating hybrid organisms. Her work, often considered the antithesis of extinction, involves the fusion of different species. Additionally, she displays a keen interest in cybernetics, as shown by her fascination with Susan's head implant.
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What was Dr. Gross' role in the Seeker program? toggle section
In the Seeker program, Dr. Gross trained the Seekers to apprehend humans, termed as Hiders, who tried to flee the island. These Seekers were physically augmented and could be further upgraded for enhanced strength. They also aided in moving injured Hiders to the hospital. The program ended when Dr. Gross left the island, leaving Susan Strong (Kara) as the sole known surviving Seeker.
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Why did Susan flee from Dr. Gross in 'Preboot'? toggle section
Upon discovering her origins, Susan Strong chose to escape from Dr. Gross in the episode 'Preboot'. She was initially held captive, but managed to free herself, neutralising Dr. Gross's assistants in the process. She fled the Examination Room with Finn and Jake. In response, Dr. Gross activated her hybrid animals, which underwent a cybernetic transformation and were released from their enclosures.
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Episode appearances[]

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Trivia[]

  • Her methods for wanting to help upgrade involuntary lifeforms through cybernetics are similar to The Borg Queen from Star Trek: The Next Generation.
  • Dr. Gross' suit is reminiscent of the one worn by Dr. Samuel Hayden, from the game DOOM 4, who also was human, but then moved into a cybernetic body.
  • Her name and title may be a reference to Heinrich Gross, an Austrian psychiatrist and Nazi war criminal who used the same methods as Dr. Gross.

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