History YMMV / HonkaiImpact3rd

** Susannah was a background character who only appeared in one comic and a small event in version 4.4, but her co-starring in an event with Li Sushang made her popularity skyrocket. Her shy and awkward but earnest and enthusiastic personality (and a healthy amount of ShipTease with Sushang) quickly endeared her to the fandom to the point she became the first playable character released after the end of Part 1. The BellyDancer design of her battlesuit only helped.

** Raven was a rather minor character initially, but her interactions with Mei, her soft spot for children, her heartbreaking backstory and generally fun personality (among… [[EvilIsSexy other things]]) made her a very popular character, to the point she won the "Idol Contest" event by a landslide (beating Ai-chan and Tesla) in all servers and eventually became playable in Version 5.2.

* EvilIsSexy:
** Himeko, after being possessed by Honkai energy and turning on her allies, gains her Blood Rose battle suit, which is noticeably skimpier than her other battle suits.
** [[spoiler:Kiana's Herrscher of the Void battlesuit]] is also rather sensual compared to her other suits as it shows her bare shoulders and is noticeably tighter around the legs, not to mention her short skirt which lead to very frequent panty shots. This goes even further with the swimsuit she acquires during the "Odd Drifter" event, a two-piece outfit with a translucent top and a barely-there bottom.
** Most of Rita's outfits are slinky and body-hugging with lots of gauzy panels and open cutouts. Her Maid of Celestia outfit, for example, is a cheongsam-style dress with a CleavageWindow, NavelWindow, and short skirt. Playing with her as Fallen Rosemary cranks this up even further, as the outfit is a long elegant dress and she gets a full head of long hair while still keeping her EyesOutOfSight, and she gets the game's first BathtubScene in the "Rosemary's Floriograph" event, where Fallen Rosemary (as Irene Adler) is an important side character. It's downplayed, though, with the swimsuit you can get for her in the "Odd Drifter" event, as it's a frilly one-piece that's more modest than many other Valkyries' swimsuits. As the story's progressed, however, Rita is more seen as a morally grey character; she genuinely aims for protecting the people from Honkai threats, while at the same time she follows Otto's every order, including the questionably ethical ones.
** Raven's default outfit is a form-fitting bodysuit that emphasizes her breasts, legs and rear, and also gives her CombatStilettos.

** Kiana becomes this once it's revealed that [[spoiler:unbeknownst to her, [[CloningBlues she's a clone of the real Kiana]]--and god knows what would happen if she ever figures out]]. Not to mention [[TraumaCongaLine the string of tragedies and tribulations]] that she's gone through, both in the past and present, detailed in her character section.

* ItWasHisSled: [[spoiler:Himeko]]'s death is very well-known, not in the least because players of [=miHoYo's=] other properties ''VideoGame/GenshinImpact'' and ''VideoGame/HonkaiStarRail'' often bring it up to demonstrate [=miHoYo's=] relative willingness to kill off important characters.

** Raven's default outfit is a form-fitting bodysuit that emphasizes her [[BoobsOfSteel breasts]], legs and rear, and also gives her CombatStilettos.

* ContinuityLockOut: Events involving the Captain [[AlternateContinuity have their own continuity]] and will often reference the plot of previous events. The problem is that [[TemporaryOnlineContent events go away after they end]] and can't be revisited unless they're specifically brought back, such as was done for "The Day You Vanished with the Stars" and "Rosemary's Floriograph", which means new players will often end up extremely confused at some developments that call back to old events.
** Though they are not directly related, the initial chapters of Honkai Impact 3rd assume that players are familiar with ''Guns [=GirlZ=]'' setting and characters, leaving many new players wondering what's going on and what the characters are even talking about. This is somewhat rectified through the use of events and suplementary comics exploring important events and characters, with later story chapters also trying to explain things more clearly for those who were unable to play ''Guns [=GirlZ=]'' while the servers were up.

** Though they are not directly related, the initial chapters of Honkai Impact 3rd assume that players are familiar
with ''Guns [=GirlZ=]'' setting and characters, leaving many new players wondering what's going on and what the characters are even talking about. This is somewhat rectified through the use of events and suplementary comics exploring important events and characters, with later story chapters also trying to explain things more clearly for those who were unable to play ''Guns [=GirlZ=]'' while the servers were up.

** The Protagonist of "A Post-Honkai Odyssey" is the first male playable character in this game which consists of [[ImprobablyFemaleCast many female characters]]. Because his earliest [[MemeticMutation memes]] compare him to a typical harem anime protagonist, he's [[{{Shipping}} shipped]] with all of his fellow "APHO" teammates (Mei, Carole, Timido, Bronya, and [[HoYay Lyle]]).

* SignatureScene: The Herrscher of the Void taking over Kiana in Chapter 8, [[CurbStompBattle effortlessly defeating]] the Anti-Entropy mechs, while the [[SugarWiki/AwesomeMusic epic song]] "Befall" plays over the background. The official ''Honkai Impact 3rd'' Website/YouTube channel uploaded the animation as [[https://www.youtube.com/watch?v=Q-b6rdyIJsY "Will of the Herrscher"]], which serves a [=YouTube=] ad for the game, and has over 55 million views already. Likewise, various gaming news websites used screenshots of this cutscene to showcase ''[=HI3=]'' for gamers who are [[NewbieBoom introduced]] to [=miHoYo=] because of ''VideoGame/GenshinImpact''[='=]s prominence from 2020 onwards.

* SequelDisplacement: As might be obvious from the title, yes, ''[=HI3=]'' is the third game in the ''Honkai'' series. It is also '''far''' and away the most successful and at this point the only one a large number of even dedicated fans will have ever played. ''Honkai Gakuen 2/Guns [=GirlZ=]'' shut down its Global and South-East Asian servers in 2021[[note]]There is an event titled "Houkai Cross 2019" in ''Guns [=GirlZ=]'' where Rita and Fu Hua in her "Phoenix" variation become {{Guest Fighter}}s in the game, as shown [[https://www.bilibili.com/video/av76595591/ here]].[[/note]], and ''Zombiegal Kawaii'' is no longer available, while ''[=HI3=]'' is (as noted above) one of Asia's most successful mobile titles.

* BetterThanCanon: Hanser, the voice actress of Bronya, did a [[https://www.youtube.com/watch?v=MK2xU8bOTuI cover of "Dual Ego"]], which was preferred by some fans over the original version.

* TierInducedScrappy:
** The B-ranked battle suits (with the exception of Valkyrie Chariot) are generally seen as useless for any sort of end-game content. While they can get the player through any story content just fine, they’re just too lacking in DPS or support capabilities to be of much help in Abyss or Memorial Arena, even with gacha gear. Though this is likely intentional, as they are the starting Valkyries, with players being intended to move on to more powerful Valkyries as they progress through the game.
** Kallen’s Sundenjaeger battlesuit is generally regarded as one of the weakest in the game. While she isn’t a bad Valkyrie in and of herself, she’s just too awkward to build many viable teams with her, due to the fact that [[MasterOfNone she only has subpar support skills and DPS abilities]]. Her playstyle of sustained DPS on the field also doesn’t fit well within the "burst damage" meta of the game, where Valkyries are rapidly switched in and out to gather/apply debuffs, use party buffs, use [=QTEs=], and inflict huge bursts of damage. However, with the introduction of Starlit Astrologos and her ability to support even while off the field, Sudenjaeger has been buffed quite a bit, with it finally being possible to build teams around her, although it is doubtful she will ever be considered a meta Valkyrie.
** Bronya’s Dimension Breaker battlesuit, despite being S-rank, is considered the one Bronya battlesuit that doesn’t have a single useful ability in the current meta[[note]]she was valuable in the older versions of the game, but the game's later environments made her capabilities undesirable[[/note]]. Her DPS potential is nonexistent and her main support abilities consist in inflicting the "time lock" debuff on enemies, which most bosses are immune to anyway. Even her leader skills (accelerating SP regeneration and buffing the total damage of all-mech teams) are better handled by more polyvalent Valkyries or equipment. As such, most players see her as the one S battlesuit you ''don’t'' want to get in the dorm supply.
** At the other end of the spectrum, a lot of players disliked [[GameBreaker Herrscher of Thunder]] for her ability to steamroll most bosses and levels effortlessly (with her full equipment at least) and supposedly ruining the competitive balance. It came from how she could work in environments, and/or against enemies, that didn't particularly favor her (such as against a PSY or attribute-less enemy, or in environments that don't strengthen PSY characters or lightning attacks) and could still score relatively high compared to characters that the particular stage favored.
** Dea Anchora was hated for similar reasons, utterly outperforming every other fire valkyrie and making any fire-vulnerable boss a breeze without much effort, but with the added grief of being released as the same time as Herrscher of the Rimestar, a psy-type ice boss that "coincidentally" was a perfect match for DA. This was seen as an overly blatant attempt to force DA into the meta by fans; it doesn’t help that Durandal isn’t a particularly popular character to begin with.

** Susannah was a background character who only appeared in one comic and a small event in version 4.4, but her co-starring in an event with Li Sushang made her popularity skyrocket. Her shy and awkward but earnest and enthusiastic personality (and a healthy amount of ShipTease with Sushang) quickly endeared her to the fandom to the point she became the first playable character released after the end of Part 1. The BedlahBabe design of her battlesuit only helped.

** Susannah was a background character who only appeared in one comic and a small event in version 4.4, but her co-starring in an event with Li Sushang made her popularity skyrocket. Her shy and awkward but earnest and enthusiastic personality quickly endeared her to the fandom to the point she became the first playable character released after the end of Part 1. The BedlahBabe design of her battlesuit only helped.

* FunnyAneurysmMoment: [[https://www.youtube.com/watch?v=EYweBAfic2A The dorm interaction]] between Mei and [[spoiler:Herrscher of the Void]] has the former remark that [[spoiler:Kiana]] is in her rebellious phase and the latter replying that "I hate the way you look at me! I'm not a problem child". Come "Lament of the Fallen" and the revelation of how far Mei is willing to go to deal with said "problem child", it's not so cute anymore.

* HarsherInHindsight: In the Previous Era, that era's version of Himeko became the Herrscher of Flame, who turned Australia into a charred wasteland in a couple of hours. In late 2019, Australia suffered extensive wildfires that killed millions of animals and devastated large areas of the continent's bushlands.

* {{Fanon}}: The original ending of ''[=Gun GirlZ=]'' involves [[spoiler:God Kiana [[KillEmAll killing the entire cast]] then executing a CosmicRetcon]]. One popular ArcWelding fan theory is that [[spoiler:said CosmicRetcon created the ''Honkai Impact 3rd'' AlternateUniverse]].

* AuthorsSavingThrow: Version 4.6 has a "crystal spending event" where, if you spend enough crystals (or tickets) in the Supply, you can get a limited costume for Mei [[spoiler:(Herrscher of Thunder)]]; not only that, [[spoiler:Herrscher of Sentience (Fu Hua)]] is also made playable and put in the Supply. This was when Version 4.5 (which centers on the collab with ''Anime/NeonGenesisEvangelion'') was in full swing, and it had [[TemporaryOnlineContent limited Eva content that cost crystals and will never come back]]. The fans (especially outside China) are concerned about whether to save crystals for the 4.6 event of spend them in 4.5's Eva-related supplies. Then it's announced (at least in SEA server) that the spending event will come in 4.5, and it eventually came true - not only can the players pull regular supplies for getting the milestones in the spending event, they can also pull the limited Eva supplies for it as well, and the event also goes into Version 4.6. The actual grand prize (the aforementioned Mei costume) will still appear in 4.6, but for this server, reaching said milestone will grant the player a box containing said costume that will be "opened" in 4.6.

** The Herrsrcher of Sentience [[spoiler:aka Fu Hua's awakened Shadow Knight]] is further proof that the Honkai get all the good shit. A WhipSword that can cover the entire battlefield, a {{BFS}} that can double as a goddamn HoverBoard, and a sickening GrinOfAudacity, all add flair to one of the most interesting villains and [[spoiler:a very powerful playable character]].