History Music / Fx

* {{Unperson}}: This was done to Amber when she was recovering from her ankle injury, which went for over 6 months. When f(x) was filming ''Koala'', because she wasn't part of it, video footages of the members talking about Amber were edited out and it went as far as asking a Hong Kong fanboy that they were filming to take down his poster of Amber.
* WhoWearsShortShorts: Victoria, Krystal and Luna mostly alternate on who wears them (it's most common Krystal and Luna, when Victoria wears hotpants, the other two get the tight pants). Sulli often stuck with skirts and Amber only wears pants and long shorts.
* YouGottaHaveBlueHair:
** Luna had blue hair in the ''Pinocchio'' music video and again for ''Red Light''.
** Krystal had pink hair and Sulli went red for "Rum Pum Pum Pum".
** Amber went red for ''Red Light''.

** Amber went red for ''Red Light''.
* ZettaiRyouiki: Luna, Krystal, and Sulli had knee-high socks in "Rum Pum Pum Pum", while Amber had three-quarter socks.

** Amber once said in an interview that she's a Koala, Victoria’s a hamster, Krystal’s a tadpole, Sulli’s a penguin, and Luna’s a puppy.

* MultinationalTeam - Let's have a recap: Victoria is Chinese, Amber is a Taiwanese American, Luna and Sulli are Korean, and Krystal is a Korean American.

* WhoWearsShortShorts: Victoria, Krystal and Luna mostly alternate on who wears them (it's most common Krystal and Luna, when Victoria wears hotpants, the other two get the tight pants). Sulli often sticks with skirts and Amber only wears pants and long shorts.

Former member [[TheCutie Sulli]] went on a hiatus from mid-2014 due to the stress of dealing with malicious internet comments about her, and eventually she officially withdrew from the group in August 2015 to focus on her acting career. Tragically, she [[https://www.nytimes.com/2019/10/14/arts/music/sulli-dead.html committed suicide in October 2019]] due to the non-stop hate she had received from the general public.

* Sulli (Choi Jinri, born March 29, 1994; died October 14, 2019) - Vocalist, Lead Rapper, Visual, Face of The Group

Following a three-year hiatus, Amber made an announcement on September 1, 2019 that she had not renewed her contract with SM Entertainment. Four days later, SM announced that neither Luna nor Victoria had renewed their contracts. When asked if that mean the group had disbanded, Amber said that the group had no intentions to reunite, continuing "[w]hether we do music or not, I think there will be a time when we can but I think right now we’re just figuring ourselves out. We have no plans, but it’s never not an option."

Following a three-year hiatus, member Amber revealed on September 1, 2019 that she had not renewed her contract with SM Entertainment. Luna and Victoria followed suit, the announcement coming from SM on September 5.

* TheCutie: Sulli was f(x)'s resident fake maknae mostly because she looks (and acts) younger than the real youngest Krystal.

* OlderThanTheyLook - Sulli has quite the babyface, even though she's actually about 7 months older than the youngest member Krystal.

* SurprisinglyGoodEnglish: they have two fluent speakers despite being a Korean group:
** Krystal, who was born in California. They moved to Seoul in 2000 after her sister Jessica was scouted by SM. (Krystal was too young to be scouted at that time. She was scouted in 2006).

** Following massive flack she was receiving for all kinds of reasons, Sulli's hiatus from mid-2014 began in this manner with SM saying the hiatus was indefinite and she'll not leave the group. This was averted in the end when she never returned from said hiatus, withdrawing from the group in 2015, and finally losing any chance to come back due to her death in October 2019.

The quartet consists of [[TheLeader Victoria]], [[{{Bifauxnen}} Amber]], [[TheChick Luna]], and youngest [[NotSoStoic Krystal]], who is coincidentally the younger sister of former Music/GirlsGeneration's Jessica. Member [[TheCutie Sulli]] was also a member at debut but went on a hiatus from mid-2014 due to the stress of dealing with malicious internet comments about her, and eventually she officially withdrew from the group in August 2015 to focus on her acting career. Tragically, she [[https://www.nytimes.com/2019/10/14/arts/music/sulli-dead.html committed suicide in October 2019]] due to the non-stop hate she was receiving from the general public.

The group debuted on September 5, 2009 with the release of the single ''LA ch TA''. The lead single off their album ''Pinocchio'' gained their first music program win and was their first song to win the triple crown.

The quartet consists of [[TheLeader Victoria]], [[{{Bifauxnen}} Amber]], [[TheChick Luna]], and youngest [[NotSoStoic Krystal]], who is coincidentally the younger sister of former Music/GirlsGeneration's Jessica. Member [[TheCutie Sulli]] was also a member at debut but went on a hiatus from mid-2014 due to the stress of dealing with malicious internet comments about her, and eventually she officially withdrew from the group in August 2015 to focus on her acting career.

* CampStraight: GenderInvertedTrope with Amber. She's so boyish that people have mistaken her for a man in real life, but she's attracted to men.

* TheCutie - Sulli was f(x)'s resident fake maknae mostly because she looks (and acts) younger than the real youngest Krystal.

* FoodSongsAreFunny - ''Ice Cream'' at one point repeats the line "Milkshake, milkshake, actually I’m Ice cream, ice cream, vanilla ice cream".

* FakeMemories - For 24 years, Victoria thought she was O blood type and only found out after that that her real blood type is A.
* FamilyBusiness - Krystal's older sister Jessica is also in SM and is a former member of the girl group [[Music/GirlsGeneration SNSD]].
* {{Fan Girl}}

* FriendToAllChildren - Luna gets along well with kids.
* FunWithPalindromes - Krystal's Korean name.

* MultiethnicName - Chrystal Soo "Krystal" Jung and Amber Josephine Liu.

* NotSoStoic - ''Ice Princess'' Krystal. It runs in the family. Watch f(x)'s shows and you'll find out that she and her members are actually very nice and energetic.

* PeekABangs - Amber has her long bangs sometimes covering her eyes in the "LA chA TA: music video.

* TheReveal - Krystal revealing Amber's middle name in ''Hello f(x)'' as a surprise for many, including Amber who had no intention of revealing it. She's become okay with it since then.

* SillyLoveSongs - ''Chu~'' is a ridiculously cute song about kissing, complete with lyrics like "Do it do it, chu~♥ It's true, true, true, true it’s you".
* StageNames - "Victoria" for Song Qian, "Luna" for Park Seonyoung, "Sulli" for Choi Jinri. Krystal technically counts since her birth name is actually spelt Chrystal.
* SurprisinglyGoodEnglish - they have two fluent speakers despite being a Korean group:

* SurprisinglyGoodForeignLanguage - People who aren't avid fans might think that all the members of f(x) are Korean. That's not true:

* SurrealMusicVideo

* TeenIdol - Just about everyone were in their teens when they debuted as idols.
* {{Tomboy}} - Amber, and their stylists really like to emphasise this. She prefers to dress more boyishly such as baggy shorts and loose clothing, has BoyishShortHair, and used to play a lot of sport when younger (which is how she adopted her tomboy looks in the first place). It's to the point that when she once grew her hair out it was interpreted as a GirlinessUpgrade.
* TravelogueShow.

* {{Unperson}} - This was done to Amber when she was recovering from her ankle injury, which went for over 6 months. When f(x) was filming ''Koala'', because she wasn't part of it, video footages of the members talking about Amber were edited out and it went as far as asking a Hong Kong fanboy that they were filming to take down his poster of Amber.

* YouGottaHaveBlueHair

%% * ActionGirl: Luna.

* YoungerThanTheyLook - Krystal. She was only 14 years old in the ''LA chA TA'' music video, which was released in September 2009, but looked like a girl in her late teens. Contrast to [[OlderThanTheyLook Sulli]], who is 7 months older yet on the other hand has quite the babyface.

[[https://www.cnn.com/2019/10/14/entertainment/k-pop-star-death-scli-intl/index.html On October 14, 2019, Sulli was found dead in her apartment by her manager,]] [[https://entertain.naver.com/read?oid=076&aid=0003481064 having tragically committed suicide.]]

** Following massive flack she was receiving for all kinds of reasons, Sulli's hiatus from mid-2014 began in this manner with SM saying the hiatus was indefinite and she'll not leave the group. This was averted in the end when she never returned from said hiatus and instead withdrew from the group in 2015.

On October 14, 2019, former member Sulli was found dead in her apartment by her manager. It is thought that she committed suicide.

* Sulli (Choi Jinri, born March 29, 1994) - Vocalist, Lead Rapper, Visual, Face of The Group

* NotSoStoic - ''Ice Princess'' Krystal. It runs in the family. Watch f(x)'s shows and you'll find out that she and her members are actually very nice and energetic. Also see the {{Kuudere}} entry.

* DeniedFoodAsPunishment - The consequence in the 7th episode of ''Koala'', in which the first person to find the Egg Pie shop gets to buy... well, [[CaptainObvious an egg pie]]. (In the other episodes, they sometimes compete against each other to get the prize money which would be used to buy food).

[[quoteright:350:http://static.tvtropes.org/pmwiki/pub/images/f1807152b90d5466c4a8034280f05acb.jpg]]
[[caption-width-right:350:'''f(x)''' in 2010. (L-R) Victoria, Amber, Krystal, Sulli, Luna]]

Korean Discography:

Japanese Discography:

* AscendedMeme: The fans calling Amber "llama". It's now part of her {{Twitter}} username ([[http:/twitter.com/llama_ajol llama_ajol]]).

'''f(x)''' is a South KoreanPopMusic GirlGroup formed in 2009 by ''SM Entertainment''. The name is a play on the mathematical notation for function, with "f" signifying "flower" and "x" representing the female's double X chromosome. The group members have also been nicknamed "function girls".

** Ascended Meme: Krystal proved she really was an ''Ice Princess'' by winning first place in the reality show competition ''Kim Yuna's Kiss & Cry''.

The quartet consists of [[TheLeader Victoria]], [[{{Bifauxnen}} Amber]], [[TheChick Luna]], and youngest [[NotSoStoic Krystal]], who is coincidentally the younger sister of former Music/GirlsGeneration's Jessica. Member [[TheCutie Sulli]] was also a member at debut but went on a hiatus from mid-2014 due to the stress of dealing with malicious internet comments about her, and eventually she officially withdrew from the group in August 2015 with her wish to focus on her acting career being the official reason.

* ButterflyOfDoom: Overlapping with RuleOfSymbolism, the music video for "4 [=WALLS=]" has shots of a purple butterfly in the forest scenes and revolves around the Butterfly Effect. After Amber breaks her teacup, Krystal spills tea that Victoria eventually slips on, which brings them to a dream/alternate reality where the girls race to find answers that would prevent their fate (hinted to be death) from happening.

* PeekABangs - Amber has her long bangs sometimes covering her eyes in the ''LA chA TA'' music video.
* {{Retraux}} - The style of the [[http://www.youtube.com/watch?v=r4u3BzM0rqo "art film"]] for their 2nd full-length album ''Pink Tape'' was quite vintage and hipster-like.

%% * ActionGirl - Luna.
* AffectionateNickname - The members call Luna "puppy" and Amber "koala".
%% * AfraidOfNeedles - Victoria.

* AscendedMeme - The fans calling Amber "llama". It's now part of her twitter username ([[http:/twitter.com/llama_ajol llama_ajol]]).
* {{Bifauxnen}} - Amber who is a {{tomboy}} and dresses like such, which matches her pretty and androgynous looks.
* ButNotTooForeign - Krystal and her sister Jessica were born and raised in America, therefore making them Korean-American. Same for Amber, who was born and raised in America to Taiwanese parents, making her Taiwanese-American.
* CookingDuel - There was one in the 12th episode of ''Koala'', in which Luna and Sulli (who made a rice cake soup) teamed up to go against the team of Victoria and Krystal (who made kimchi pancakes). The duel was peaceful, though.
* CoolBigSis - Amber's sister Jackie and Krystal's sister Jessica act as chill and admired sibling mentors to them.