History Characters / NijisanjiENOBSYDIA

* HeManWomanHater: Inverted with Ember, who Selen states ''only'' likes adult women, which causes issues when she needs to find him a veterinarian.

* SeasonalBaggage: Her third outfit, which comes with the official formation of Zuttomo, is spring-themed. Appropriately, Petra is the first of the four to reveal her Zuttomo outfit.

* SixthRanger: It's often joked about that Petra is either part of [=LazuLight=], Ethyria, Luxiem (as Peter) or the JP branch because of how often she's hanging out with them rather than with OBSYDIA. Regarding Ethyria, three of them and Petra actually formed the unit [=NijiUK=], with "UK" standing for "Unbelievably Kracked". [=NijiUK=] eventually has now officially become Zuttomo as a recognized sub-unit, with all four members receiving new outfits to celebrate its official birth.

** There are also multiple occasions where Petra likes being mistreated. Such as during her ''VideoGame/JumpKing'' stream, where she asks her fellow livers to roast her instead of encouraging her, since either would have the opposite effect on her. During a ''VideoGame/MarioParty'' collab, she asks Ren to call her "bitch" in his Goofy voice, much to her delight. During her OBSYDIA 2nd Anniversary stream, she tells her viewers to physically abuse her little plushie version because she thinks that doing that is cute.

* OnlySaneWoman: In contrast to Rosemi, who rather enjoyed Selen's Obsydia ''Minecraft'' house [[Main/StrangeMindsThinkAlike (for the same reasons Selen claimed to make it)]], Petra was [[https://youtu.be/ByDMB37DxnU horrified]] by the chaotic combination of blocks, doors, wool, and dirt.

* SixthRanger: It's often joked about that Petra is either part of [=LazuLight=], Ethyria, Luxiem (as Peter) or the JP branch because of how often she's hanging out with them rather than with OBSYDIA. Regarding Ethyria, three of them and Petra actually form the unit [=NijiUK=], with "UK" standing for "Unbelievably Kracked".

* GirlsAreReallyScaredOfHorrorMovies:
** She does not handle horror movies well at all, mentioning that she tends to fall asleep with a stream on because otherwise her mind will drift to scenes from horror movies that she had watched. The shower scene from ''Film/TheGrudge'' is one particularly-traumatic scene for her.
** She's a bit better with horror games. Her ''VideoGame/DeadSpace'' streams has her panicking and screaming a lot, but she powers through thanks to her quick reflexes and impeccable aim. The PC port's bugs also helped. However, Selen herself would later say that this was because that game gave her weapons to fight back; in scary games where the player is helpless and cannot defend themselves other than running and/or hiding, she gets absolutely terrified.

'''Nijisanji EN:''' [[Characters/NijisanjiENLazuLight LazuLight]] | '''OBSYDIA''' | [[Characters/NijisanjiENEthyria Ethyria]] | [[Characters/NijisanjiENLuxiem Luxiem]] | [[Characters/NijisanjiENNoctyx Noctyx]] | [[Characters/NijisanjiENILUNA ILUNA]] | [[Characters/NijisanjiENXSOLEIL XSOLEIL]] | [[Characters/NijisanjiENKrisis Krisis]]\\

** "That's right!"

* SheIsAllGrownUp: Her second outfit adds 10 cm to her original height and also boosts her cup size.

** At some point while playing ''VideoGame/{{Parasocial}}'', she treats her ''stalker'' as her oshi, while she's the one acting like the stalker instead of the reverse.

* {{Irony}}: She notes that she was given the most Japanese to sing/rap in OBSYDIA's debut single "Black Out" despite easily having the weakest command of the language of the trio, if not the entirety of the EN branch to that point. Doubly so since Elira, her equivalent in [=LazuLight=], is the most fluent of that trio.

* LongNeck: A RunningGag is that how long her neck is, and while Elira also has similar long neck, the latter's outfits draw less attention to it. During the Woo Gods collab, they tried to make Selen's neck a crucial part of her rewritten lore and how it ''shrank''.

* GroinAttack: Team Snake Bite's name is based on the idea of a man having his penis bitten by a venomous snake, and the only way to save him, is by [[HoYay having his male friend suck the poison out of the penis]].

* TomboyAndGirlyGirl: She's notably one of the most tomboyish girls in EN and thus has this dynamic with several other female livers, with Pomu and Rosemi being prominent examples.

** Whenever OBSYDIA get the chance to collab as a group, both, [[TheBully Selen]] and [[NiceGirl Rosemi]], will bully Petra whenever they can. After a ''Mario Kart 8 DX collab'', Rosemi even says that she realized that Petra deserves it. Similarly, the Petra in Rosemi's game "OBSYDIA Anniversary" is still treated in this manner.

* ButtMonkey:
** She's the most frequent target of abuse by both chat [[https://twitter.com/Petra_Gurin/status/1443571002739335179/photo/1 and the other girls]].
** Her ''Overcooked 2'' collab with Selen consisted primarily of [[https://www.youtube.com/watch?v=y5NdpvPj-DA Selen bullying her]].
** In one [[https://www.youtube.com/watch?v=bXaC4hvzMSo Mario Kart 8 DX collab]], she is bullied by Pomu and then [[{{Gaslighting}} gaslit]] by Rosemi and Selen.
** When she posted her [[https://twitter.com/Petra_Gurin/status/1445764467883601920 reference sheet]] on twitter, people were [[https://twitter.com/PomuRainpuff/status/1445765506682654725 quick to point out that her butt was visible in it]]. What follows is, as you'd expect, everyone [[https://twitter.com/EliraPendora/status/1445803328219217926 making fun of her for it]], and [[https://twitter.com/EliraPendora/status/1445814756481245196/photo/1 using it]] [[https://twitter.com/PomuRainpuff/status/1445822468657229828/photo/1 against her]], much to her embarrassment. Even Nina, ''on her very first day of streaming'', gets in on it.

* SuspiciouslySimilarSubstitute: Most of the [=NPCs=] that appear in Rosemi's "OBSYDIA Anniversary" game are modeled after various EN livers or her favorite fictional characters, but they have their names and appearances altered. This partially applies to her game's bosses, mostly Vox Akuma, as he's being repurposed as "Vox Sucma". The only EN livers who don't appear in her game are Yugo[[note]]graduated[[/note]], Zaion[[note]]terminated[[/note]] and all of Krisis[[note]]Rosemi developed the game several months before Krisis debuted[[/note]].

* {{Foil}}: Rosemi and Petra are this to each other. Rosemi is a shy nerdy girl, a NiceGuy who doesn't swear, has difficulty to insult or compliment someone on the fly, is regarded as the most seiso member of the EN branch and rarely gets bullied by her chat or her colleagues because of how sweet she is, and she's also a {{Tsundere}}. Petra is more of the normie side, she [[LadySwearsALot swears all the time]], she can easily insult or compliment someone spontaneously, is usually bullied by her chat or colleagues, and she's also a {{Yandere}}.

* CatchPhrase: "Graphic design is my passion."

* TheArtifact: Their schtick of being the ShadowArchetype of [=LazuLight=]. This fades away soon after their debut, as Rosemi and Petra do not manage to be DarkerAndEdgier than Pomu and Finana most of the time.

'''Nijisanji EN:''' [[Characters/NijisanjiENLazuLight LazuLight]] | '''OBSYDIA''' | [[Characters/NijisanjiENEthyria Ethyria]] | [[Characters/NijisanjiENLuxiem Luxiem]] | [[Characters/NijisanjiENNoctyx Noctyx]] | [[Characters/NijisanjiENILUNA ILUNA]] | [[Characters/NijisanjiENXSOLEIL XSOLEIL]]\\

* SurprisinglyGoodForeignLanguage: In addition to English, she is highly adept at Japanese (having mentioned passing the highest Japanese Language Proficiency Test level) and also speaks Cantonese. She frequently "self-dubs" herself in Japanese with such skill that fans jokingly praise her ''English'' instead, prompting her to remind them that English is her first language.

* CanadaEh: Selen is from Canada, but most viewers don't get that vibe from her, to the point that not only her viewers but also staff members forget she is Canadian. When the internet of other Canadian livers were unable to steam due to the internet being down in Canada, Selen was the only Canadian liver who did not have that problem. People speculated that she wasn't Canadian, but Selen countered that Canada has more than one internet provider. In January 2023, when Elira, Rosemi, Enna, Millie and Nina are having an off-collab and try to come up with a name for themselves, they can't call themselves [=NijiCA=], since Selen is missing.