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Hey mungo. This is an A B conversation so C your way out.

Sue "Knock Knock" is a girl in Little Lamplight in 2277.


Knock Knock, previously known as Sue,[1] and her twin brother Knick Knack were born in 2263.[Non-canon 1] She is in charge of morale and keeping the peace around town,[2] and does so by exchanging stories,[3] and telling jokes.[2]

One of her sources for her jokes was a book that was once retrieved from the nearby Vault 87,[4] but has since been destroyed,[Non-canon 2] which given the bad quality of its contents is not considered a loss by her.[5] Knock Knock is also eager to hear new stories, as she is limited to events that happen within the community, since their scavenger teams usually stay hidden.[6]

Daily schedule

Knock Knock wanders around Little Lamplight all day until she goes to sleep.

Interactions with the player character

Interactions overview

Perk nociception regulator color.png
This character is essential. Essential characters cannot be killed.

Other interactions

  • If the Lone Wanderer asks her for a joke and either laughs at it, or pretends that it is funny, she asks them for tales from the wasteland.
    • They can then tell her a total of three tales; the first one being about exiting the vault, the second one about James's sacrifice during The Waters of Life, and the third one about their own escape from the Enclave during The American Dream.
    • Regardless of the Lone Wanderer's Karma, they can tell her three versions of their story: good, neutral and evil. Whichever versions are chosen, she will proceed to share the tales with every other Lamplighter she comes across.


Apparel Weapon Other items On death
Ragamuffin outfit
Kid's police hat

Notable quotes


Knock Knock appears only in Fallout 3.


PCPC Playstation 3Playstation 3 Xbox 360Xbox 360 Lying to her that her jokes are funny can be repeated unlimited times for additional experience, this also counts toward the achievement/trophy Silver-Tongued Devil (50 Speech successes).[verified]


  1. Lone Wanderer: "Why are you called Knock Knock?"
    Knock Knock: "Well, when people started calling Knicky by his new name, I needed one too, see? If you're twins, it just doesn't cut it to be called 'Knick Knack and Sue.'"
    (Knock Knock's dialogue)
  2. 2.0 2.1 Lone Wanderer: "You said you're in charge of 'morale.' What does that mean?"
    Knock Knock: "Well, technically, I'm patrolling and 'keeping the peace.' Mostly that involves making sure people are happy and not getting into trouble. You can't very well keep the peace if you've already lost it, see? So - bam! Jokes! Wanna hear one?"
    (Knock Knock's dialogue)
  3. Lone Wanderer: "The Mayor let me in. I'm not here to cause any trouble."
    Knock Knock: "Always good to hear, but not even any fun trouble? Even a little? See, I collect a lot of stories, and sometimes trade them to keep the others amused. A bit of fun trouble is always good for morale. Morale's better than less-al, see?"
    (Knock Knock's dialogue)
  4. Lone Wanderer: "That was hysterical!"
    Knock Knock: "Whoa, you really think so? Like, actually funny? Can you convince other folks to find them funny? Actually, most of our jokes are from an old book we found in the vault, called 'Vault Boy's Big Book of Laughs for Kids.' They're not really funny, but something about hearing them is a little comforting, you know?"
    (Knock Knock's dialogue)
  5. Lone Wanderer: "That's the dumbest thing I've ever heard."
    Knock Knock: "That's only because you haven't heard all of the jokes from the book. Like this gem, 'What's big, and red, and beats rocks?' "A big, red, rock-beater." Seriously. See? Now that's the dumbest thing you've ever heard!"
    (Knock Knock's dialogue)
  6. Lone Wanderer: "Why don't you come up with new jokes or stories to tell?"
    Knock Knock: "Oh, we've got lots of funny incidents. Like when Sammy shot the Raider who thought he was a girl, that sort of stuff. But we don't really get a lot of new stories from outside. The scav teams spend all their time hidden, so they don't get much news, see? I'd sure like to hear more tales from the great big outdoors, myself. Actually, if you hear any, feel free to tell me!"
    (Knock Knock's dialogue)


  1. Fallout 3 Official Game Guide Game of the Year Edition, p. 87: "Nicholas 'Knick Knack'
    Knick Knack and his twin sister, Knock Knock, are 14 years old and dedicated to the town. While his sister collects terrible jokes, Knick Knack collects anything of value. He organizes the settlement's store of goods, mostly to keep them in good shape for anyone who needs them, but also because he has a fondness for working with items and making sure everything is 'just so.'"
  2. Fallout 3 Official Game Guide Game of the Year Edition, p. 99: "Sue 'Knock Knock'
    Long ago, an earlier generation of kids got a book from Vault 87 called Vault-Boy's Big Book of Laughs for Kids. Even though the book has long since been destroyed, many of the jokes were passed down through the generations, and the knock-knock joke has been her favorite sort of humor, even if it's not always understood."