Martin Brenner's first appearance.
Brenner in Hawkins National Laboratory.
Brenner changing into a hazmat suit.
Brenner in the elevator with some scientists.
Brenner walking through the contaminated hallway.
Brenner seeing an opened portal.
Brenner telling his scientists that their test subject could not have gone far.
Brenner investigating Benny's Burgers after
Connie Frazier murders the restaurant's owner.
Brenner finding two of his agents dead.
Brenner outside the restaurant, realizing his test subject, Eleven had escaped.
The next day, Brenner returns to the lab.
Brenner listening to Joyce Byers's phone call to the police station.
Brenner arriving at the Byers' house, wearing a hazmat suit.
Brenner and a team of scientist investigating the Byers' backyard.
Brenner in the Byers' shed.
Brenner spotting some ooze seeping through the shed.
A flashback of Brenner supervising Eleven during a test.
Brenner and his scientists watching Eleven use her powers to crush a Coca-Cola can.
Brenner looking satisfied after Eleven successfully crushed the soda can with her powers.
In the present, Brenner wears a hazmat suit as he stands in the room where the portal is.
Brenner overseeing his men beginning their work to study the portal.
Brenner watching a cable extension getting implanted to the ground.
A digital photo of Brenner with the test subjects of MKUltra.
"Good luck in there, son."-Brenner wishing one of his scientists, Shepard good luck as he goes to venture into the Upside Down.
Brenner watching Shepard walk through the portal to the Upside Down.
Brenner receiving a transmission from Shepard.
Brenner listening to Shepard's transmission as he describes what he sees in the alternate dimension.
Brenner hearing Shepard's transmission suddenly getting cut off.
Brenner hearing monstrous growls through Shepard's transmission.
"REEL HIM BACK IN!!!"-Brenner yelling at his colleagues.
Brenner watching his colleagues attempting to save Shepard.
Brenner watching the cable moving violently through the portal.
Brenner horrified when bloody pieces of clothing come through the portal, realizing Shepard had been killed.
Brenner dismayed at one of his colleagues' death and not getting any information on the Upside Down.
"Eleven, are you listening?"-Brenner in another flashback with Eleven.
Brenner instructing Eleven to find a patient and repeat what he says during a doctor's session.
"Eleven? Repeat the words."
Brenner surprised to hear the man's voice through a speaker as Eleven uses technopathy to transmit the man's voice instead.
Brenner failing to spy on Police Chief Jim Hopper after the latter destroys a microphone implanted in his home.
In a flashback, Brenner tells Eleven that she'll need to remote travel to a very far distance.
(Eleven: "The bath.") "Yes, the bath. Is that okay?"
Brenner seeing Eleven being placed in a sensory deprivation tank.
In a flashback, Brenner sits with Eleven in her room.
Brenner guiding Eleven to the sensory deprivation tank.
Brenner talking to Eleven as some scientists get ready to put her in the sensory deprivation tank.
Brenner reminding Eleven to make contact with the
creature.
Brenner and his scientists hearing Eleven scream when she makes contact with the creature.
Brenner and his colleagues seeing a portal to another dimension being opened.
Brenner and his agents returning to the Wheeler house.
Brenner finding a yellow Benny's Burgers shirt in the Wheelers' basement.
"I understand how upsetting this is."
Brenner lying to Mr. and Mrs. Wheeler that he's trying to help their son when he's really endangering their son's life.
Brenner asking Mr. and Mrs. Wheeler where Mike could be.
Brenner and Connie leaving the Wheeler house after interrogating Mike's parents.
Brenner entering Jim Hopper's cell.
Brenner going to give the captive Hopper some cigarettes.
Brenner questioning Hopper who promises to reveal Eleven's location in exchange for being allowed to rescue Will and Brenner not harming Mike, Dustin, and Lucas.
After agreeing to Hopper's terms, Brenner and his team leave to find the kids while telling Connie he intends for Hopper and Joyce to die in the Upside Down.
A flashback of Brenner overseeing his test subjects in the lab's "rainbow" room.
Brenner greeting test subject, Ten.
"You up for some more lessons?"
When Ten uses his magic 8 ball to communicate, Brenner sees he's willing to do some tests.
Brenner escorting Ten through the lab.
Brenner beginning his lessons with Ten.
"Don't force it. Let it come to you."
Brenner pleased when Ten uses his powers to see that he made a drawing of the sun.
"It's suppose to be a dog."
Brenner chuckling when Ten states his second drawing looks more like a cow than a dog.
"All right. Let's try something a little bit more challenging."
Brenner instructing Ten to find his colleague, Dr. Ellis.
Brenner taking notes when Ten says he sees Dr. Ellis doing lessons with another test subject, Six.
Brenner trying to calm Ten down when he sees how uneasy he's getting.
Suddenly, Brenner hears an alarm being triggered throughout the lab.
Brenner trying to get in touch with his colleagues to hear what is happening.
Having been told by Ten that Six and Dr. Ellis have just been murdered, Brenner hears people screaming outside in the hallway.
After a powerful force throws a door at him, Brenner wakes up.
Brenner noticing Ten lying on the floor.
Brenner discovering Ten is dead.
Brenner saddened over Ten's death as he cradles his body.
Brenner hears more screaming echoing throughout the lab.
While investigating, Brenner sees several orderlies and test subjects had been slaughtered.
Entering the Rainbow Room, Brenner finds an eight-year old Eleven standing over several corpses.
Brenner, Owens, and two other doctors witnessing El waking up.
Brenner telling El she's safe after she encountered a terrifying memory in the Nina Project.
After El angrily smacks him in the face, Brenner watches her run off.
Brenner amazed to see El's powers having resurfaced when she telekinetically threw three guards off of her.
Brenner walking towards El.
Brenner watching El angrily trying to use her powers on him to defend herself, only to see they're not working again.
Brenner gently reassuring El he understands why she isn't able to use her powers.
Brenner slowly approaching El.
Brenner giving El a choice to either work with him to regain her powers or leave the facility where he won't stop her.
After El decides to stay to regain her powers, she and Brenner walk through the facility, forming a temporary truce.
"Good morning, children."-A flashback of Brenner greeting his test subjects in the Rainbow Room.
Brenner making an announcement to his test subjects.
Brenner telling the children he has another assignment for them.
Back in the present, Brenner tells Owens if they tell Eleven who they're up against now, they'll risk everything.
Later, Brenner oversees One being tortured for stepping out of line.
Brenner being spied on by Eleven.
Brenner exiting out of the room after his men finish torturing One.