Milner

"'I'm Milner. Now, I need you to come round here and fire both barrels of that shotgun into his head.'" Milner, also known as Letan, is a character in the British television series. She is a MI5 agent, the head of the Network, and the true identity of Mr. Rabbit.

In Prime Video's remake, her name is Katherine Milner. She claims originally to be an agent of Homeland Security, but later reveals that her actual identity is that of "Home." In the Utopia comic, she is depicted as the Blue Fairy.

Background
Milner's background is hazy, as is the question of which of her names is her "real" one. The Assistant is the only character to call her Letan in conversation; most others default to Milner. Milner was married to a man named Tom, but his surname is never revealed and he never refers to her by name.

Season 1
The Tramp is the first character to mention Milner; he tells Jessica Hyde to contact her, saying Milner is "like [them]. Works in secret. Trusts no one." later in Season 1, episode 3, Ian Johnson and the others try to contact her VIA E-mail but with little success. they end up calling her instead and asks her about Jessica Hyde. Milner says she never heard of her. Ian ends up saying an excuse and hangs up, Milner calls again, she explains that call was monitored and she is on another phone and should go to the church where they'll meet for the first time.

when they get to the church, a network agent ambushes them. he counts down from 3. the agent gets shot in the head and Milner walks into frame

At the end of the first season Jessica is about to hand over the Utopia manuscript when she has an epiphany finding the same rock she and her brother had as children and realises that Milner was Mr. Rabbit, Jessica attempts to escape but is cornered and captured by Milner who revealed that a complete version of Janus in Jessica’s blood.

Season 2
Milner hugs Arby and sends him on a mission to kill Donaldson. Milner's encounter with Arby surprises Lee; he even remarks, "You're being uncharacteristically soft."

Milner continuously struggles with the decision of keeping a captured Jessica alive torturing her to get the completed Janus or to cut her open and extract it herself. She sees Jessica as the last link to Philip and is reluctant to put her down.

Utopia (U.S.)
"I'm not Homeland. I'm Home.''" "But, Christie..." "''Christie and I have parted ways. He just doesn't know it yet."

- Katherine Milner and Jessica Hyde, "Stay Alive, Jessica Hyde"

A clandestine meeting
Jessica Hyde and her companions discover a clue in the comic Utopia, a clock with a set of seemingly random numbers on it. The numbers match those which Hyde discovered underneath the fingernails of Artemis, her legendary protector whom she killed after she learned allowed the apparent burning death of her father. Wilson Wilson realizes that the numbers are a phone number with a Chicago area code. They call it and the voice on the other end of the line answers with "Department of Homeland Security - Agent Katherine Milner." Jessica gives her own name, telling the woman that Artemis told her to contact her. She replies that she knows either name, but that her cosplay name is Enyo. She tells them they have the wrong number and hangs up. Immediately afterwards, however, a recording begins, telling Hyde that the Harvest begin tracking her the moment she placed the call. Milner gives her directions to an address, 1100 Durham Rd., telling her to leave immediately, the way Artemis taught her. At this, Hyde burns away the traces of the group's presence in their safe house before driving them away.

The group arrives nearby the meeting place, an abandoned Toys R Us, but Hyde sends in Ian Ackerman and Becky Todd, not willing to trust Milner without more information. Upon their arrival, Milner at first mistakes Becky Todd for Jessica Hyde, but soon realizes her mistake. She gets up, telling them not to waste her time, but they insist that they know Hyde and Utopia, but they aren't going to tell her just because she asks. Ian asks her what she knows about the Harvest and she replies that he thinks she won't tell him, but she will because they should know. She tells them a tale of conspiracies and intrigue, about how after the 9/11 terrorist attacks, the U.S. government recruited a group of brilliant scientists to try to win the biological arms race. Unknown to them, there were several rogues within this group, who became the Harvest, controlled by Mr. Rabbit. Mr. Rabbit made a deal with a group in China for a particularly vicious strain of flu. When they reneged on the deal, he went to China himself and killed more than 800 people. They then captured and tortured him before releasing both him and his identity, a game to see who would hunt him down first. He instead hunted down everyone who could possibly know his identity before going underground.

They ask if they can seek asylum with her, but she replies that they can't, as they don't have either Jessica Hyde or Utopia. Becky asks why she wants Jessica Hyde and she replies that Mr. Rabbit wants Jessica Hyde because she knows something that could be very dangerous to him. She tells them to tell Jessica Hyde that she can be a friend and starts to leave. Becky asks her where Home is and she replies that it's "where the heart is," then leaves them.

Seeking help, returning Home
"You have delivered to me the one thing I needed. You have given me Jessica Hyde. We're not just gonna save the world, we're gonna rebirth it."

- Katherine Milner to Jessica Hyde, "Stay Alive, Jessica Hyde"

As the group unravels more of the conspiracy, they discover a reference to "Enyo" in the Utopia comic and remember Milner's comment about Enyo being her cosplay name. Wanting in ally in their fight to stop Kevin Christie's the Undoing plot, they again pay a visit to Milner, now with the scientist Michael Stearns also on their side. They realize that Milner is the Blue Fairy seen in the Utopia comic, Jessica Hyde's guardian angel. Hyde points a gun at Milner's neck, demanding to know how she knew her father. Milner claims that Hyde's father was her partner in Homeland Security's biological crimes unit, but that he had no idea how to take care of his daughter. Mr. Rabbit got a hold of him before they even became aware of him and she's been searching for Hyde since then. They plead with her to help them to stop the Undoing, but she tells them that all they have is a paranoid hunch and no real proof. She refuses to help them, so they tell her they'll do it themselves.

The group breaks away to raid Christie Labs and stop the Undoing, but Hyde remains behind for her own purposes. She has John, a former assassin of the Harvest once known as "Arby" and her apparent brother, drive her to Home. There, she returns to her old childhood house, suffering symptoms of the supposed Stearns Flu virus due to an injury incurred as part of the group's plans. Inside the house, she is surprised by the sudden arrival of Milner. Milner tells her that her blood is slowly saving her and to be grateful when the next part begins. Hyde asks if Homeland is there and Milner replies "I'm not Homeland, I'm Home," revealing a tattoo like Christie's, indicating that she is apparently one of the identities of Mr. Rabbit.

Hyde rises, shocked, and reaches for her gun, only to find it gone. She asks about Christie and Milner replies that the two of them have parted ways, that Christie has different ideas about what Utopia means. Hyde then grabs the pages of the Utopia comic and scatters them outside the window, but Milner tells her that she never wanted Utopia, that it was only bait to draw Hyde back home. "Come Home," she tells her. She continues that she and Hyde's father had a vision, in which humanity would be free of all of their cruel impulses. She rips open Hyde's clothing to reveal a pattern of scars on her back, saying that the future is on Hyde's back, waiting to be harvested. She then knocks Hyde out and wraps her in her old childhood blanket, before going downstairs to the house's basement. "I have your daughter" she tells the man sitting there, drawing a page of a comic in the style of Utopia.