Piper grew up in a small community on the outskirts of the Commonwealth with Nat and their father, a member of the local militia. After her father was found dead under suspicious circumstances, Piper learned that he had discovered a raider plot to sack the town. His superior, Captain Mayburn, arranged to leave the main gate open and unguarded one night to allow raiders access in exchange for a cut of the loot and had Piper's father murdered to keep him silent.
The local authorities did not believe her claims and refused to investigate. Piper then created and circulated wanted posters featuring the captain and a list of his crimes. The settlers, outraged by the story, exiled Mayburn. When the raiders eventually showed up expecting the gate to be wide open, they instead encountered prepared defenses by alerted townsfolk and were driven away.
Eventually Piper and Nat saved enough money to relocate to Diamond City, where she began her career as an investigative journalist. Her fervor for discovering the truth made her popular for a while, but eventually public opinion turned against her because her articles were seen as being "too negative". Piper's work yields results often at the expense of her own safety, for example in the Sole Survivor's first encounter with Piper, she has gotten herself locked out of Diamond City on the orders of McDonough, the city's mayor, after Piper published an article suggesting (correctly) the mayor was in fact a synth.
Furthermore, Piper was responsible for exposing a caravan cartel for driving up food prices in Diamond City. The cartel retaliated by poisoning her drink at the Dugout Inn, but she managed to purge the poison by drinking moonshine and had several members of the cartel arrested. Her investigation into irradiated drinking water at Bunker Hill led her to discover that the culprits were Children of Atom cultists. Threatened with execution, Piper tricked the cultists into believing she had a vision from Atom. After the cult inducted her as a member, she managed to sneak away and send Bunker Hill security to deal with the cultists.
Despite multiple death threats, assassination attempts and a near-execution, finding herself in sticky situations is a point of pride for Piper, who feels getting into trouble is just part of chasing the truth.
When the Sole Survivor first encounters Piper she is on the verge of exile from Diamond City for writing an article suggesting that Mayor McDonough is a synth. While arguing with the gate guard to be let back in, she asks for the Survivor's assistance in bluffing past security. Once inside, Piper gets into an argument with the mayor who accuses her of spreading lies. When the dialogue is complete Piper asks the Sole Survivor to stop by her office. Completing an interview with her leads to Piper offering to travel with the player character and watch their back as they adjust to life in the wasteland.
At maximum affinity Piper awards the Gift of Gab perk, which doubles experience from persuasion successes and finding new locations.
Piper is a potential candidate for romance, an option that unlocks after reaching the highest level of affinity.
Piper can be caught talking to Nick Valentine about "one of his clients" as Nick refers to you, as after hearing this conversation, Piper will say, "Speak of the devil him/herself." This will only occur if the Sole Survivor is romanced to somebody besides Piper.
Two occasions during the Arts random encounter: the first upon persuading human Art to put down his gun and the second upon helping him kill his synth doppelganger after successfully interrogating him.
When conferring with Honest Dan after gathering evidence during Human Error, choosing to respond with "Maybe" and then "That's fair" when he tells the Sole Survivor they work as equal partners or not at all.
Persuading Jacob Orden to communicate ahead to The Compound that the Sole Survivor is coming during Human Error.
Killing Virgil in self-defense after giving him the serum and visiting again some days later. (Virgil turning hostile, however, is not supposed to happen. Not destroying any of his defence systems during your first visit and not wearing power armor for your return usually prevents this.)
If the Sole Survivor has found Nick Valentine before traveling to Diamond City the gate will already be open and the mayor will be interacting with Piper inside.
Diamond City security will tell the player character to be careful about having her as a companion because of the trouble between her and the mayor.
If the Sole Survivor hasn't done her interview yet, then exits Diamond City and enters again later, Piper can be found in Mayor McDonough's office accusing his secretary of sleeping with him.
As the Sole Survivor's companion she will often offer aid in the form of "sweet" food and drink (bubblegum, gumdrops, Nuka-Cola, Sugar Bombs or sweet rolls). This is similar to Strong who offers food as well, but in the form of meats.
Bringing Piper back to Diamond City may cause Nat to run up to her and relate a story about being given detention at school. Piper may then tell her she is grounded, much to Nat's chagrin; however, another conversation has Piper congratulate Nat on getting detention (due to punching a boy who was annoying her), telling her never to change.
She also has an interaction with the Sole Survivor about how she believes Nat idolizes her too much, hoping that time apart will prevent Nat from growing up to be like her. The Sole Survivor can choose to offer advice on how to deal with the situation.
Occasionally, when passing Takahashi, Piper will tell the Sole Survivor she wants to introduce them to her informant. She will jokingly interrogate Takahashi, finishing by saying that Takahashi 'spilled the beans, I bet your name isn't even really Blue.'
Visiting the upper levels with Piper will cause Wellingham to pretend to loudly throw her out, while secretly sharing a bit of gossip and intrigue with her.
If the player character ends the main quest by siding with the Institute and then talks to Piper, she might be distraught and angry at the player character for the world thus created, though the player character can still have her travel with them as a companion. However, if the player character's affinity with Piper is high enough (or grows high enough), she will write an article titled Fear the Future? where she is revealed to be more optimistic, though still wary, of the future.
Piper will call the player character "Blue," referring to the Sole Survivor's blue jumpsuit. If the Survivor is not wearing the jumpsuit, Piper will simply say "I know you're not wearing the jumpsuit right now but the Pip-Boy and the 'fish out of water' look? Dead giveaways."
Piper's interactions with Mayor McDonough seem to be inspired by Bob Woodward's and Carl Bernstein's reporting of the Watergate scandal which eventually led to the resignation of President Nixon. This is further lampshaded by Mayor McDonough's "I Am Not a Synth" speech.
Piper's article The Synthetic Truth, which correctly identifies Mayor McDonough as a synth, causes Alana Secord of the Synth Retention Bureau to disavow him. This is likely the cause of the quest In Sheep's Clothing.
If Piper is present when the player character talks to Magnolia, she will clumsily compliment her, saying "Nice set this evening, ma'am... of songs that is. Is it warm in here?"
In the quest The Secret of Cabot House it's best to dismiss Piper before choosing the outcome of Lorenzo Cabot. She dislikes both choices, so it's a lose/lose situation with her. This can be avoided by choosing neither, and instead letting Lorenzo break free due to inaction. Successfully siding with the family through speech checks later in the quest also prevents her from disliking the player character.
If taken to Nate/Nora's corpse in Vault 111, she will say "Is, is that who I think it is? You okay?"
Despite being essential, Piper has a death quote. Upon being killed, she will utter "Blue..."
Piper may become hostile if the player character assaults a traveling doctor or their brahmin, even when romanced.
She will become instantly hostile toward the player character if one has killed a Diamond City security officer. Escaping the area and waiting three days should cease hostilities.
When asked about her thoughts directly after accepting the quest Blind Betrayal, Piper will react as if the quest has already been completed, thus delivering a massive spoiler.
If the player character has Strong as a follower, and then decides to travel with Piper, Strong will comment "This human weak, soft, not live long" to which Piper responds "Not so fast big boy, I know a few of your brothers that would disagree."
As a journalist, Piper can be found interviewing other NPCs about various subjects, such as life in the Commonwealth, their opinions about the Institute and hope for the future.
Piper's terminal in Public Occurences contains every available article depending on how far the player is into the main quest line. It also contains reader complaints on how her articles are always negative and just trying to drum up fear for increased sales or how the Wall doesn't contribute anything to Diamond City's safety. To every complaint, there is a published response for the public and a personal response which she keeps to herself. There also anonymous messages that are sent to Publick Occurrences for advice on a certain situation. Every one of these messages are responded to by Piper herself. Some of these situations include letting their child go and live their own life, talking to girls, and how to handle stress. One of the message's writers says that they are lonely and even asks Piper out on a date, but she declined.
Piper had been arrested by Diamond City security so many times that, up until recently, Diamond City's jail had been called the "Piper Suite".
"Look, I gotta go get settled in, but, um, stop by my office later. I have an idea for an article that you would be perfect for."
"I wonder if this is normal for other journalists..."
"What I wouldn't give for the biggest rolled up newspaper..." – when engaging insectoid enemies
"Now, now. Don't start what you can't finish."
"Nice to be back on the road .Fewer paper cuts than back home"
"Watch your digits, Blue! Ferals!" – when engaging feral ghouls
"Catch!" – when throwing a grenade
"You really do have a talent for finding trouble, don't you."
"Come on, Nicky. I'm just asking for your opinion. It'd be a great quote." to Nick Valentine if the Sole Survivor is romancing someone other than her, to which he replies with "S/he's my client Piper. Why don't you learn not to snoop on a woman's/man's private affairs?"
The following is based on unverified behind the scenes information and has not been confirmed by canon sources.
"Blue" (Piper's nickname for the Sole Survivor) may also be a subtle baseball reference. "Blue" is a slang term for the umpire.
The inspiration for Piper's name may come from a play-on-words of "paper write".
In the Creation Kit, the road goggles have the Editor ID ClothesPiperGoggles. As this is the same naming convention used in the rest of her outfit red leather trench coat and press cap it's possible she was initially meant to wear the goggles with the rest of her outfit. Some concept art supports this, although she is only ever seen wearing them pushed up on her forehead.
In her concept art it appears Piper would have had shorter hair. She also would have worn a fedora rather than her reporter cap. One other concept design shows her with what appears to be an aviator's cap and camera equipment on her.
End of information based on unverified behind the scenes information.
pcps4xboxone Piper will not move even if she is standing, near an enemy, shot at or interacted with at all. She can still be spoken to. She may be locked in a single position and just slide around. Fast travelling fixes this.[verified]
pcps4xboxone Cannot romance Piper after she idolizes you (max affinity), even if player character's charisma is maxed. The key/button to select is there, but the option to romance is blank. [verified]
pcps4xboxone Piper will mysteriously disappear from the game completely. However starting the quest In Sheep's Clothing will seemingly fix this.[verified]
ps4xboxone Piper will randomly dislike something out of nowhere, such as fast traveling, killing hostile enemies, picking unowned locks, and simply exploring. It is quite rare, but frequency increases after fast traveling to an area populated with enemies, and especially when the player is in power armor (specifically the X-01 Power Armor), although these messages take an unusually long time to appear.[verified]
pc After equipping Piper with the Minutemen general's hat, she will always stand at attention when idle, even if the hat is removed from her inventory.[verification overdue]
pcps4 Sometimes when heavily injured, Piper will remain in the downed position indefinitely. She can still be spoken to, and will teleport with the Sole Survivor when traveling, via a load zone or fast travel, but will not get up or walk. (Possibly caused by fall damage outside of combat, encountered at the Garden Terrace) Depleting her health (tested using the PC Kill command) then stimpaking her seems to fix the problem. Alternatively, loading a save prior to her injury solves this.[verified]
pcps4 If Piper is your romantic partner and is your companion and is wearing power armor when your are sleeping, her power armor sometimes have disappeared when you wake up. This seems to happen when you sleep in a narrow location where there is not enough space for her to step out of the armor. If you make her leave the armor before you sleep, the problem will not occur. [verified]
↑Piper's dialogue: "one day, our Dad turns up dead. His captain, asshole named Mayburn, claims Raiders must've gotten him on watch"... the Mayor sure wanted to talk after that. The town threw Mayburn out on his ass and were dug-in when a very surprised group of Raiders finally showed."
↑Piper's dialogue: "First time, I'd just published an article about this cartel of caravans that had been driving up food prices in the city"... "And while I was passed out on the floor, security managed to grab the bartender."
↑Piper's dialogue: "I traced the water back to its source, through these old sewer tunnels"... "managed to sneak away, get Bunker Hill security to finally clean the place up."
↑Piper's dialogue: I've been shot at, poisoned, nearly executed. Heck, until recently, they called the lock-up in Diamond City the "Piper Suite."