Dr. Martin Brenner was a major character in the first season of Stranger Things. He is portrayed by Matthew Modine.

Brenner was a senior research scientist and the director of Hawkins National Laboratory. He raised Eleven in the lab, testing and pushing the limits of her psychic abilities through various experiments. In one such experiment, Brenner indirectly unleashed a monster from another dimension into Hawkins, allowing Eleven to escape the lab. In the following week, Brenner and his team searched for Eleven while investigating the newly opened gateway to the other dimension.



MKUltra participants

Brenner with his MKUltra participants

Dr. Brenner was involved in the controversial Project MKUltra, a CIA-sanctioned research program designed to develop mind-control techniques in which the subject suffered extreme conditions at the hands of the researchers, including use of psychedelic drugs, physical and mental abuse, sleep deprivation, and malnourishment.

One of the volunteer test subjects, college student Terry Ives, was pregnant during the program. She gave birth to a daughter named Jane, which Brenner and his staff abducted due to the child's dormant psychokinetic abilities, brought on upon her as a result of the experimentation on her mother.[2]

After Project MKUltra was shut down, Terry filed a lawsuit against Brenner, but it was dismissed citing lack of evidence. When the details of MKUltra became public knowledge, Hawkins Lab managed to block inquiries despite their legal obligation.[3]

Terry attempted to retrieve Jane, breaking into Hawkins Lab with a gun. However, Terry was quickly apprehended and brought to Brenner. Brenner forced Terry to be subjected to electroshock therapy, which left her in a seemingly permanent catatonic state for years after.

Dr. Brenner raised Jane under the "name" Eleven. Brenner built himself up as a father figure in the mind of Eleven, making her refer to him as "Papa".


Brenner trained and developed her psychic abilities. One of these abilities was the use of remote viewing aided by a sensory deprivation tank, used to spy on a Russian agent at a distance far away.

Brenner talks Eleven through her next task

As Eleven was spying on the agent, she encountered a monster which was heard over the loudspeakers in Brenner's control booth. Though Eleven was terrified, Dr. Brenner was intrigued and told her to make contact with the creature. However, upon this moment, a Gate to an alternate dimension cracked open in the wall of the tank room, through which the monster passed before killing one of Brenner's co-workers.
Brenner scans

Brenner scans for an "extraordinary" energy signature in the Byers shed, finding evidence of a portal

In the commotion caused by the Gate's opening, Eleven managed to escape from the lab. Brenner and other scientists investigated the lab's underground subsystem where they discovered that strange tendrils and toxic biologic growth native to the other dimension was beginning to spread through the corridors. Brenner and his team of agents began searching for Eleven and the Monster.[4]

The monster kidnapped a boy named Will Byers, which Brenner worked to cover up by placing a fake corpse in the local quarry. Brenner investigated the Byers' shed, finding traces of some bizarre, supernatural energy,

The Upside Down - Hopper and Brenner negotiate

Brenner and Hopper negotiate

Brenner discovered Eleven was staying with Will's friends, and sent agents to capture her - however, they managed to evade them. Jim Hopper and Will's mother Joyce attempted to break into the lab, but were almost immediately apprehended and brought to Brenner. In exchange for access to the Gate and the chance to save Will, Hopper disclosed that Eleven was located in Hawkins Middle School. Brenner, assisted by agents, traveled to the school and attempted to take her back to the laboratory. Although Eleven killed some of the agents using her biokinetic powers, she was drained of strength and collapsed. The blood spilt from dead bodies attracted the Demogorgon, which distracted the surviving agents, allowing Eleven and her friends to escape. Brenner was attacked by the Demogorgon shortly after their escape. It is unknown if Brenner survived the attack.


In 1984, Ray Carroll, a former agent for the Department of Energy, claimed to Eleven and Kali that Brenner was alive, and that he knew of his whereabouts.

Kali later created an illusion of Brenner in front of Eleven. The illusionary Brenner taunted Eleven, telling her that she had "a terrible wound".

The Brenner Illusion

Kali's illusionary Brenner appears before Eleven


Test subjects


Eleven's history with Brenner runs deep: not only did he define her childhood, but he was potentially responsible for her very existence. Brenner had experimented on her mother Terry, who had volunteered to become a MKUltra test subject. While undergoing these tests, Terry mysteriously became pregnant. After discovering the pregnancy, Brenner took the child away directly from birth, raising her at Hawkins Lab.

Throughout childhood, Eleven was treated harshly and severely. Brenner appeared to be Eleven's only source of social engagement, and thus she grew to be dependent on his attention. Brenner built himself up as a father figure, establishing a somewhat tender demeanor when in her presence. However, an unstated threat was present in even the most affectionate words he uttered, lurking just beneath the surface.

When Eleven performed well, Brenner would "reward" her with affection. When Eleven disobeyed him, she would instead be subjected to cruel psychological torture. Even when Eleven was on her best behavior, she spent much of her time in solitary confinement, locked in a "bedroom" cell. Brenner's only true interest in the girl was her extraordinary power; her physical or mental health was merely of tangential importance to his goal. When Eleven performed extraordinary feats, Brenner appeared proud of her accomplishments.

After Eleven escaped from the lab and experienced genuinely loving relationships for the first time, she could finally see through Brenner's façade. When he eventually found her and promised to take her home, she rejected his offer, instead crying and reaching out to her new friends.

Terry Ives

Terry Ives was one of Brenner's MKUltra test subjects. After Brenner took her daughter from her, Terry grew to loathe him, filing a lawsuit against him.


Season One appearances
The Vanishing of Will Byers The Weirdo on Maple Street Holly, Jolly The Body
The Flea and the Acrobat The Monster The Bathtub The Upside Down
Season Two appearances
MadMax Trick or Treat Freak The Pollywog
Will the Wise Dig Dug The Spy
The Lost Sister The Mind Flayer The Gate

Memorable Quotes

  • "Will you trust me?"
  • "Incredible."
  • "Extraordinary..."
  • "It's reaching out to you, because it wants you - it's calling you, so don't turn away from it this time..."
  • "She can't have got far..."


  • One of the clippings at the police station, shown briefly in the epilogue of Chapter Eight, refers to a Dr. Richard Brenner as the head of the Narcotic Enforcement Division. The use of "Richard" instead of "Martin" is mostly likely an error made by the production team.



  1. Executive producer Shawn Levy confirms Dr. Brenner is still Alive in Business Insider interview
  2. Stranger Things Season 1: "Chapter Six: The Monster"
  3. Information retrieved from newspaper articles seen in "Chapter Three: Holly, Jolly."
  4. Stranger Things Season 1: "Chapter One: The Vanishing of Will Byers"

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