Tea: Actually, I'm in love with your sexy alter ego.
Yugi: Oh. [small beat] Well this is kind of awkward.
This trope is for characters of any gender that have an alternate form or identity that is much sexier than their normal mode. It's not necessarily because their "civilian" mode is ugly, but it is generally more mundane or otherwise less appealing than their "heroic" mode. Depending on the genre, the changes can be accomplished through either regular means such as acting and swapping wardrobes or though various magical or phlebotinum-driven methods. This usually involves a change in a character's physical appearance, but sometimes it's purely a change in personality traits and behavior, suggesting that the character in question is deliberately making themselves appear unattractive to hide their Secret Identity.
Naturally, it often results in Loves My Alter Ego.
Given that sexual attractiveness is subjective, the best examples are those when the sexier nature of the alternate form is shown from the perspective of another character reacting to them with subtle flirting and innuendo that otherwise wouldn't be present. That said, it's generally pretty clear when the creators of the story are trying to change someone from Hollywood Homely (or even downright ugly) into Ms. Fanservice or Hello, Nurse!.
Compare A Darker Me. Compare also to Shapeshifting Seducer where a shapeshifter capable of assuming many forms takes on several in an attempt to appeal to a specific person. She Cleans Up Nicely should be used for when a character changes from their usually dull or unattractive wardobe, hairstyle and such to be more attractive (particularly at a formal event) however this new appearance is not associated with an alter ego or alternate physical form. Also see Evil Is Sexy.
See also Bishounen Line for when a monstrous character gets sexier once they hit a certain power level.
- Mahou Sensei Negima!
- Negi Springfield and Kotaro both use age-up pills to change from Adorably Precocious Child and Badass Adorable to Bishōnen from time to time.
- The former case, which is called Nagi (Negi's father's name) by certain people, also ended up fooling Evangeline as well as infatuating Ako Izumi.
- Vampiric Cute Witch Evangeline A.K. Mcdowell is a similar case. She has the body of a 10 year old girl, but uses magic to become older and very much The Vamp.
- Chisame, a fairly normal looking, geeky girl, who combines cosplay, The Glasses Gotta Go and computer graphics editing to make herself into famous web idol Chiu. Eventually she gets an artifact that allows her to do much the same process magically.
- Negi Springfield and Kotaro both use age-up pills to change from Adorably Precocious Child and Badass Adorable to Bishōnen from time to time.
- Meru Puri: Aram is under a curse that causes him to age up to a teenager when exposed to the dark, likewise changing him from a cute boy to Bishōnen. Of course, to the girls in the manga, this might be viewed as a Cursed with Awesome ability.
- D.N.Angel: Daisuke changes into Dark, a suave, Tall, Dark, and Handsome, older looking Phantom Thief who is the heart throb of most of the ladies, except for Riku, who prefers Daisuke.
- In YuYu Hakusho, Koenma (usually in the form of an infant with a pacifier) is able to take on an older, more Bishounen appearance. Admittedly, an older more bishounen appearance with a pacifier, but its the thought that counts.
- In D.Gray-Man, the Millennium Earl normally uses a goblin-like form but occasionally takes on a normal human form.
- Tenchi Muyo!:
- Really 20,000 Years Old Washu Hakubi normally looks like a young teenager, and she pulls a fast one on Tenchi by unexpectedly transforming into her adult form to seduce him which is, needless to say, much more well endowed. The "alter ego" is her true form, but she's spent most of life in the younger form because she long ago decided that adult society was just too screwed up for her to want any part of.
- Arguably applies to Sasame and Tsunami as well, although in this case it's more just growing up.
- Yugi in Yu-Gi-Oh! is an adorkable cute boy, but the spirit of the puzzle is a full out bishonen, who is far more successful at attracting Tea's attention than Yugi. Lampshaded, of course, in Yu-Gi-Oh! The Abridged Series (see the current page quote, above).
- Tenjou Tenge has Maya Natsume, who actually inverts this trope. Her real form is that of a voluptuous young woman, but she spends most of her time is spent in the form of a young girl, making most people think it is her regular form.
"Bob? If that weird little girl suddenly turns into the kind of stacked voluptuous chick you’d see working in a sketchy nightclub, what should I do?"
- When shy Aimi Komori applies her magic eye shadow, she becomes the sexy, superpowered cat burglar Shadow Lady.
- In Zettai Karen Children, there's a Hospital Hottie who also happens to be a powerful Esper with powers of illusion. It's eventually revealed that her perky-and-pretty appearance is ALSO an illusion, which she maintains whenever anyone's around - underneath it, she's got a face straight out of a Hammer Horror movie - think 'Frankenstein' more than 'Dracula'.
- Kichiku Megane stars the adorable, shy, door matty uke Saeki Katsuya, who turns into a sadistic and sexy seme when he puts on his glasses.
- Makoto in Nicoichi is much more attractive (and popular) in his female persona than his normal self.
- Moka from Rosario + Vampire, when she transforms from Outer Moka into Inner Moka. This is especially evident in the anime where a lot of the transformation sequence is just her, um, various assets almost doubling in size. Also, Inner Moka's voice is deeper and much more sultry than Outer's. Possibly a bit subverted later on because Inner Moka is actually the real personality and Outer is the alter ego created to tone down her powerful vampire aura.
- Ahiru No Oujisama has Reiichi and Omae. Reiichi can change back, Omae can't.
- In Kill la Kill, Ryuko's scruffy old homeroom teacher, Aikuro Mikisugi, can reveal himself to be a ridiculously bishonen and chronically stripping member of La Résistance with little more than a Hair Flip and Glasses Pull.
- Kinji in Aria the Scarlet Ammo, normally tries to avoid anything even remotely romantic to avoid going into Hysteria mode. When he goes into it, he becomes a smooth ladies man.
- The main character of Accel World, Haru, is a chubby looking teen with a tall and slender robotic avatar called "Silver Crow" which he uses exclusive in the titular virtual reality fighting game.
- Natsuki from Uta No Prince Sama may count. He turns into Satsuki when he takes off his glasses.
- Black Hanekawa from Bakemonogatari. While Araragi always thought that Tsubasa Hanekawa was an attractive girl, when "Black Hanekawa" appeared the first few times, her normally black hair turned white, wore lingerie fit to be in a Victoria's Secret catalog, showing off her surprisingly fit, lithe body, and also had cat ears and spoke with 'nyaa's. What made her dangerous was that even a mere touch would painfully drain the life force out of said person, regardless of whether or not she wanted to, and she was smart enough to pose a threat even to the strongest of supernatural creatures. The only times she would appear was when Tsubasa was extremely stressed out so the 'Cat' took over and rampaged on the town to relieve said stress.
- Villain Stunner was an overweight and lonely receptionist who gained super strength and great beauty through virtual reality technology.
- Black Cat considered Spider-man himself to be this, as she tried very hard to get romantic with him, but was not remotely attracted to Peter Parker, and consequently the big moment where he unmasked himself to her as a sign of commitment ended with her asking him to put his mask back on. In the Ultimate Marvel version she actually threw up, though this was just the Squick factor of realizing how young he was.
- DC Character Looker was a frumpy librarian until she got her powers, and then she could turn into a redheaded hottie. Eventually, though, after she became a vampire, the sexy became her Shapeshifter Mode Lock.
- Captain Marvel. Not that Billy Batson is ugly, but Cap is better looking (not to mention Not Jailbait). This is explained in comics set in the future that show that Captain Marvel is what he looks like as an adult. Utilized in the Billy Batson and the Magic of Shazam continuity, where Billy is stuck in a Loves My Alter Ego situation with a Lois Lane Expy.
- Likewise with his twin sister Mary Batson, and her alter-ego Mary Marvel.
- The titular W.I.T.C.H. are fairly average (albeit skinny) teenagers in their normal form. When transformed however, they are changed to look much more... adult. Lampshaded on more than one occasion.
- Both Prime and Elven from The Ultraverse.
- Compare mousy Jennifer Walters to the Amazonian Beauty Green-Skinned Babe that is the She-Hulk.
- Inverted with Big Bertha of the Great Lakes Avengers. Her superheroine form is immensely fat, while her regular form is the most popular swimsuit model in Wisconsin. Deadpool prefers her as Big Bertha... but then, he's Deadpool. As of the team's 2016 series either her civilian form is fat too or she gave up transforming on some level, as she's now a plus-sized model.
- Superman sometimes falls into this, particularly in the earlier ages, with his Clark Kent persona wearing mild-mannered clothing, general weak posture, and self-effacing personality, contrasting Superman's tight clothing, powerful stance, and determined attitudes.
- A Running Gag in the French comic Melusine is that her werewolf boyfriend always runs away before sunrise (interrupting the romantic moment and leaving her confused) because it turns out his human form is a textbook specimen of the Geek Physique (and he's all too aware of it: every such strip ends with him scrawny and bespectacled saying "Can't let her see me like this").
- Stanley Ipkiss, from The Mask film. Note that he's not more physically attractive (unless you're into that sort of thing), but more confident and impulsive (and gets reality warper powers), and consequently has more luck with his Love Interest. As is often the Aesop with such tales, the Mask only highlights personality traits already present, and brings out the ones the wearer keeps inside. Stanley, by the end of the film, has become a more confident and assertive person, meaning he has no need for the Mask anymore to be attractive to his love interest.
- This was a main plot point in both versions of The Nutty Professor. In both versions, the titular professor invents a way to change himself from a nerdy looking fellow in the original film (and a rather overweight guy in the remake, as shown in the page image) into a smooth ladies man. The original even concluded with the titular professor coming clean to a large group of people while he lets the formula wear off. There are no cuts, and both the professor and his alter ego were played by Jerry Lewis, so the transformation is almost entirely just Lewis changing his physical mannerisms and putting on a pair of glasses.
- Anne Bowman from Psycho Beach Party (Chicklet's Split Personality) looks the exact same during her scenes but her confidence and behaviour, using her body language, makes her much more of a sex object than Chicklet's shy and Tomboy-behaviour. In-Universe, that is.
- Probably inevitably, there have been at least two versions of The Strange Case of Dr. Jekyll and Mr. Hyde in which Jekyll changes from man to (gorgeous) woman. The older version, Dr. Jekyll and Sister Hyde, was a Hammer Horror movie that dragged in Burke and Hare and Jack the Ripper, to boot. The second was Dr. Jekyll and Ms. Hyde, which was more of a comedy, though Ms. Hyde was still evil.
- Tyler Durden (Brad Pitt) in Fight Club is The Narrator's (Edward Norton) more charismatic alter-ego. In his own words, he "look(s) like you want to look and fuck(s) like you want to fuck." Interestingly, since he only looks like Brad Pitt to the Narrator, the difference is entirely in his actions and attitude.
- Batman Returns puts this in play for Catwoman - instead of a confident and seductive professional thief, Selina Kyle is a mousy secretary for Max Schrek, and only dons the black vinyl cowl for revenge after he pushes her out a window to her not-quite-death.
- In God Stalk, the first volume of P.C. Hodgell's Chronicles of the Kencyrath, Jame's tavern dancer persona, the B'tyrr, is this. It's partly the rather revealing and sensual Senetha costume she wears, described as revealing "much skin in unexpected places", but also the dance, which is magically seductive. Since this is so not Jame's persona otherwise, people who've seen her as the dancer generally don't recognize her regular persona in public.
- Alex, in The Other Kind Of Roommate, comes off to Beth as only only slightly better than the serial killing, international crime lord she pictured. Her second impression of him is when Xander's in control, who not only gets her flirting and giggle-snorting in the space of ten minutes, but has her noticeably disappointed when Alex comes back the next day.
- In Sister Pelagia series by Boris Akunin, the eponymous protagonist often has to disguise herself as her own sister for the needs of her investigations, wearing alluring female clothing and even flirting with men.
- Family Matters: Supreme nerd Steve Urkel is in love with one of the other main characters Laura, but his nerdiness and forwardness repulses her. He creates a machine utilizing a concotion he calls "Boss Sauce" to become Stefan Urquel, a sexier version of himself who was a smooth ladies' man and just as smart as Steve (though it was subtly implied Steve was just a little bit smarter). However, the first time usage also had Stefan be a world-class jerk. Later iterations had Steve perfect the formula so Stefan would retain Steve's positive qualities like his niceness and even attempted becoming Stefan permanently. Later Stefan became his own man when Steve cloned himself and Laura decided to use the clone to become Stefan. Stefan himself addresses Steve as "the man who created him."
- The Are You Afraid of the Dark? episode "The Tale of the Dark Dragon" had two students taking a special serum that made them temporarily into their "true" selves (more good looking, confident etc). Once they were able to accept their deep psychological issues, the transformation became permanent.
- Candice from Heroes casts illusions of her appearance (similar to Shapeshifting, but her shape doesn't really shift it just looks like it). She usually appears as a Hot Chick but her real appearance is a lumpy, acne covered mess named Betty.
- In the Star Trek: The Original Series episode "Mudd's Women", Mudd has pills that he claims makes a woman more attractive. It was eventually revealed that a placebo produced the same results, with the Aesop being that attitude and confidence is what makes a woman attractive. Of course, given that they clearly showed women physically changing as a result of the pill rather than just acting differently, it was something of a Broken Aesop.
- Jekyll: Most people seem to consider Tom Jackman's alter-ego Mr.Hyde to be considerably sexier than Jackman, with even two lesbian characters agreeing that he's hot. Katherine Reimer (Jackman and Hyde's assistant) is seemingly the only person who considers Jackman better looking than Hyde.
- In La Fea Mas Bella, one of the many incarnations of Yo soy Betty, la fea (Ugly Betty in the US), it turns out that the protagonist's ugliness is completely fabricated. Her alter ego, Aurora, is a model for the very same magazine where she works.
- The main heroine of the now defunct American soap opera One Life to Live, Victoria Lord, had DID, but her most recurring personality was Niki Smith, who was more sexual and less uptight in behavior and appearance, but Depending on the Writer was also self-destructive and sociopathic.
- In Saba-dol, middle-aged teacher Shijimi Usa uses makeup and cute clothes to transform herself into 17-year-old national Idol Singer Mayu Watanabe.
- Final Fantasy:
- Cloud's 'ex-SOLDIER' personality in Final Fantasy VII is a cool, hypercompetent, swashbuckling '90s Anti-Hero who is irresistible to women and men - even though he's also a total jerk. His original personality is that of the unpopular town dork, and quite hesitant and awkward.
- In Final Fantasy XIII-2, it's implied that Chocolina is actually this to Dajh's Chocobo chick. This is later confirmed in Sazh's DLC story. As it turns out, she got caught in the distortion just like he did, and wanted to help the others just like they always helped her, so Etro gave her the form of an attractive woman and the ability to be everywhere at once.
- In Ar tonelico Qoga: Knell of Ar Ciel, playable Reyvateils have multiple personas, some of which are older and sexier than the main teenaged ones.
- In Azure Striker Gunvolt, Joule's powers manifest into an Energy Being known as Lumen, the Muse (Cyber Diva in Japan). Joule is a 13 year-old girl, while Lumen is probably what she'd look like when she's 4 years older, mixing this with Older Alter Ego. The two of them were actually compared to each other by Gunvolt and their friend Zeno (who's a fan of Lumen back when she was still a celebrity) and the latter explicitly states that he "likes the parts of [Lumen] that are all grown-up and bouncy."
- Azure Striker Gunvolt 2 reveals that Zonda's true form is that of a young girl probably no older than Joule. Her male and female forms that she uses in her boss battle and were originally presumed to be her true form, on the other hand, are Mr. Fanservice and Ms. Fanservice respectively as they look like they're in their late teens to early twenties and represent the sin of Lust.
- Persona 5: The Protagonist normally presents himself as a mild mannered high school student with dorky glasses, but becomes a suave Gentleman Thief during his illicit activities to reform corrupt members of society.
- In Buster Wilde Weerwolf, Bernard the human has only one known ex-wife while Buster, his werewolf alter ego, has plenty of people's phone numbers and is able to hook up with almost any man in just a night.
- Played with in Girl Genius. Agatha unwillingly shares her brain with her mother, the Big Bad of the series. Although they obviously share the same body and therefore don't change physical appearance, it's very obvious when it's Lucrezia in charge, and when it's Agatha. The first thing Lucrezia did was strip down to her underwear and flirt with the son of one of her devoted followers, whereas when Agatha wakes up strapped to an operating table in her underwear, the first thing she demands is her clothes. It's got to the point where her love interests can tell when Lucrezia is influencing Agatha's actions, which happens when she's tired or stressed, just because she flirts with them more.
- In Animaniacs Minerva Mink had a nerdy wolf Abhorrent Admirer who turned sexy under a full moon.
- Bluster Kong in the CG Donkey Kong Country cartoon accidentally created a Nutty Professor type potion in one episode. It turned him from a sniveling, cowardly, balding ape into a smooth talking ladies' gorilla called Leo Luster. Candy Kong forgets about her date with DK and falls for him instantly. His coolness is so potent that he can use it to hypnotize King K. Rool and his goons into giving back the Crystal Coconut willingly. And he does it all through a catchy musical number!
- Present in the W.I.T.C.H. television series as well as the comic above. Cornelia even wonders at one point if she can date older boys in her Guardian form. In Season Two she does just that with Taranee's older brother.
- On Recess, when Gus loses his glasses, all kids outside his small circle of friends no longer recognise him and mistake him for a new kid. He takes on a new cool kid identity, Guy, and several girls crush on him throughout the episode.
- An episode of Codename: Kids Next Door had Hoagie gets turned into a cool teenager, whom he dubs "Hank", uses his new persona to date Cree.
- Jem: Jerrica Benton is an attractive young woman in her own right, however her alter ego Jem is a knockout who draws men like bees to honey. Part of it is due to the clothes Jem wears compared to Jerrica while another part is how Jem acts more open and flamboyant than Jerrica. Jerrica's long-time crush Rio likes both Jem and Jerrica. Season 3 introduced Riot, who loves Jem but ignores Jerrica.