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Characters / Undertale - Alphys

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Top Index | Major (The Human Child, Flowey, Toriel, Sans, Papyrus, Undyne, Alphys, Mettaton, Asgore Dreemurr) | Minor | Monsters | Spoilers (The Fallen Human)

The royal scientist, who works directly for King Asgore. She is incredibly talented at building things such as puzzles and human-hunting killer robots.

  • The Apocalypse Brings Out the Best in People: During the Genocide Run, she spends her time working behind the scenes to evaucate as many monsters as possible to the True Lab. If you abort the Genocide in the Hotlands, then she succeeds in saving Monsterkind and is both hailed as a hero and elected to be the new ruler.
  • The Atoner: Becomes this in every ending in some capacity. At the very least, she'll admit to you that you'll need to kill Asgore and take his SOUL in order to escape the Underground in most Neutral Routes. In the True Pacifist Ending, she releases the Amalgamates and confesses to everything she did in the True Labs, and in the near-Genocide Neutral ending, she evacuates the surviving monsters and becomes the ruler of the Underground (and is implied to have confessed her secrets in this ending as well.)
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  • Bad "Bad Acting": She's very bad at remembering her lines and cues when "helping" with Mettaton, even though she's presumably the one who wrote the script.
  • Be All My Sins Remembered: In the neutral ending where she becomes queen, she is frustrated with the other monsters considering her a hero for evacuating everyone to protect them from the human child in spite of all the horrible things she did, which they now know about in full.
  • Because You Were Nice to Me: In order to thank you for allowing her to take part in your adventure and to make it up to you for having set up a fake adventure to begin with, Alphys is willing to have a "cute pretend date" with your player character, though she admits that it sounds bad when she says it like that. She isn't actually interested in the player character, of course, and the date ends with her pouring her heart out to Undyne, the person she actually likes.
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  • Bitch in Sheep's Clothing: She was pulling the strings behind the entire Hotland section of the game in non-No Mercy routes out of a desire to feel useful as your Voice with an Internet Connection. And that's to say nothing of her Dark and Troubled Past... It's ultimately subverted, though, since you can still get to know her on the True Pacifist route and find her to still be very genuinely nice and regretful of... Everything, and still taking care of the Amalgamates in secret despite great personal danger in doing so.
  • Break the Cutie: It's a long process for poor Alphys. It starts when Mettaton sabotages her attempts to save you from danger that she herself set up, causing her to suffer a lapse in the confidence she's just recently built by saving you before. It gets worse when Mettaton reveals she's been deceiving you, and that he's done playing around, causing her to have a full breakdown. And that's not even getting into the True Labs, where the results of her experiments on Determination show their face. It's no wonder that, on some routes, Alphys can commit suicide out of grief.
  • Cartoon Creature: Somewhat. Is she based on a lizard? A pangolin? A dinosaur? A dragon? No one is quite sure, though her design is agreed by most to be reptilian in nature.
  • Chekhov's Gunman: It's possible for Alphys to mistakenly call you to order pizza way before you meet her.
  • Cool Big Sis: According to Bratty and Catty, Alphys used to be this for them.
  • Deconstructed Character Archetype: Of the Socially Awkward Nerd. Yes, Alphys's love for anime and lack of social skills is adorable to look at; however, this lack in social skills came from the insecurities she developed out of guilt from creating the Amalgamates (an experiment that went horribly wrong). This caused her to become a shut-in, denying any social interaction (outside of her internet life) and it would have driven her to suicide if Undyne hadn't stepped in. Also because of her lack of social skills and her insecurities, she conducts a scheme to force you to like her out of sheer self-relief (for which she never directly apologizes). It's only after you hang out with her she finds the courage to tell everyone about what happened.
  • Did I Just Say That Out Loud?: While "romantically roleplaying" as Undyne with her, regardless of your choices, she ends up going completely overboard and yelling at the top of her lungs. This gets the attention of the real Undyne, who'd been looking for her by that point.
  • Dirty Business: Her experiments with determination and on monsters all have serious ethical problems, even before they failed and she lied about it. She is very aware of this once everything has gone wrong.
  • Driven to Suicide:
    • She's on the verge of it. When Undyne first met her at the garbage dump, she was sitting on the edge of the abyss, looking, as Undyne put it, "contemplative." It's heavily implied that she goes through with it in any ending where you kill Mettaton, but weren't on the No Mercy route. Even in a true pacifist run, she implies that she had been considering it when she went into the True Lab, when faced with the prospect of revealing the truth of the Determination experiments.
    • This is also implied in any ending where Mettaton takes over the Underground, as Mettaton mentions that he searched for her in order to apologize for how he treated her and ask her to assist him in ruling, but was never able to find her. Notably, one of the requirements for this ending is killing Undyne.
    • When you meet her at the bottom of the True Labs, she notes that she thought that she might not make it back out — not because of the Amalgamates, but because she didn't think that she would be able to tell everyone the truth and end up running away or doing something "cowardly".
  • Dub Name Change: The Japanese translation of the game drops the 's' from her name, making her simply 'Alphy'.
  • Early-Bird Cameo: A random one can happen if your FUN value (a line of code which is randomly assigned when the game files are created) is a certain number, and has Alphys calling you as early as leaving the Ruins, having dialed the wrong number and thinking she has a pizza place. This also happens if you befriend her on a pacifist run, but reset before doing the final bosses. Additionally, she also gets name-dropped in Snowdin as the creator of the colored-tiles puzzle.
  • Emperor Scientist: In some neutral endings, and a sympathetic example too. If you carry out a Genocide Run all the way to Hotlands but abort it there, then Alphys successfully evacuates many of the surviving monsters to the True Lab while Undyne stalls your advance. She is seen as a hero for saving monsterkind from you and is elected ruler. However, she misses her friends and wishes she'd killed you when she had the chance.
  • Endearingly Dorky: Her social quirks suggest this.
  • Engineered Heroics: On a Neutral or Pacifist route, Alphys reactivates traps and puzzles that had been shut down, and convinces Mettaton to play the role of a human-killing robot so she can help the player character overcome them and feel good about herself for a change. It goes horribly wrong when Mettaton tires of the charade and decides to fight the player for real.
  • Everyone Can See It: When you go on a date with her, she makes it very clear that she's attracted to her best friend, Undyne. Mettaton comments on how obvious it is if you bring it up during his quiz, and even Papyrus seems to connect the dots, judging by one possible phone call.
  • For Science!: She clearly did not take into consideration what could go wrong when she started messing around with determination on live subjects. She also had no idea what she was getting into with the DT extractor, but she built it anyway, even though they weren't her designs, figuring she could handle it. However, her purpose in doing so isn't just to see what will happen, but to Take a Third Option in the monster's Moral Dilemma, making it possible to get to the surface without killing any humans.
  • Furry Reminder: Scaly reminder, in this case. According to the 5th Anniversary Alarm Clock Winter dialogue, Alphys is cold-blooded and has an unfortunate habit of moving and talking much more slowly when she stays in low-temperature environments for too long. This is reminiscent of many reptile species — including snakes and lizards — who depend on heat to improve their metabolism and stay energized.
  • The Ghost: In the No Mercy route, she's said to be evacuating any and all survivors someplace safe and out of your reach, and as a result, most of Hotland is completely shut out to a No Mercy player. She can only potentially appear if you get pushed into the neutral path in Hotland or the CORE (by sparing one or two key encounters, or not exhausting the random encounters there, but still killing Mettaton), at which point Sans will end up putting her on the phone for you. However, she does this only to tell you that you're a monster and that she hates you and should have killed you when she had the chance.
  • Gone Horribly Right: Her experiments led to the creation of Flowey, a test to see if one could give something that was neither human nor monster the will to live. It worked, but it also accidentally proved her previous theory — she gave Determination to the original flower from the surface, the one with the most dust on it from Asriel's passing, and in doing so, resurrected Asriel's personality and implanted it in the flower we now know as Flowey.
  • Gone Horribly Wrong: Her experiments with Determination are mostly this, as they caused the monsters she was experimenting upon to not only come back to life — which was the opposite of what she wanted — but it caused their bodies to melt and fuse with one another, creating the amalgamations.
  • Grew a Spine: If the protagonist is on the No Mercy route, Alphys finally gathers the courage to leave her lab and get as many monsters to evacuate as possible. If you abort the Genocide run in Hotland, the neutral ending involves Sans giving the phone to Alphys, who discusses how she finally had to become brave and become the new ruler of the (remaining) monsters.
  • Having a Blast: Since her attacks (as a Lost Soul) are the same as Mettaton's, she uses bombs in one of her attack patterns.
  • Heroic Self-Deprecation: She seems to make a habit of comparing herself to garbage. During the True Ending playthrough, it's revealed to come from guilt over the results of her experiments. It can even lead her to kill herself if she's pushed far enough.
  • Hollywood Hacking: Alphys' hacking skills help the protagonist quite a bit throughout Hotland. Subverted, as it's actually not hacking at all: Alphys controls everything remotely and wants to appear like mission control to the player. Her hacking may have been more genuine in the CORE, however, as Mettaton begins to counteract her efforts.
  • Hot-Blooded: It doesn't come out very often, but when Mettaton's quiz gives the Human a Mew Mew Kissy Cutie trivia question, she blurts out the answer and starts gushing about the scene that she knows it from because it's one of her favorites. In addition, no matter how you walk her through the hypothetical scenario where she confesses to Undyne, she eventually cannot contain her feelings and starts shouting her next actions at the top of her lungs. Undyne admits to liking Alphys because she's passionate about things she cares about, and does things at 110%.
  • I Just Want to Be Loved: The reason she lies constantly. She fears that if people knew she was a nerdy loser and responsible for several monsters' hideous mutations, everyone would hate her.
  • Interrupted Suicide: It's implied that at one point she was suicidal. Undyne first met her in the dump staring into the abyss and looking "contemplative". Undyne managed to talk her out of it, though.
  • Intrigued by Humanity: Loves anime and joined a human fan club.
  • It's All My Fault: Maintains this mindset throughout the entire True Pacifist run concerning her failed DETERMINATION experiments, and can even be seen saying it when you fight her as a Lost Soul.
  • Karma Houdini: She never actually faces any consequences for her actions beyond her own guilt, which is self-inflicted, and her character arc centers on improving her self-esteem by... letting go of her guilt, which means there are no consequences at all. She does get fired, but since her job is rendered pointless when the monsters go free, it's not actually a loss.
    • It's somewhat Downplayed, however, by the fact that many monsters were angry with her for a while, according to entries in the True Labs, for apparently holding their relatives hostage — meaning she suffered some loss of reputation for it. This doesn't seem to be in effect by the time of the True Pacifist ending, however, so if she ever needed to put effort into owning up to her mistakes, we never saw it.
    • Played straight with Flowey/Asriel, whose fate no one but Alphys and the player know about.
  • Labcoat of Science and Medicine: Her normal attire is a white labcoat that reaches the floor.
  • Leitmotif: The awkward, melancholic "Alphys." The Dark Reprise "Here We Are" plays in the True Lab. It appears again as the song Undyne plays on the piano while waiting for Papyrus to show up.
  • Leaning on the Fourth Wall: The way that Mettaton describes Alphys watching the player and "yells at the screen" can be seen as a playful jab at Let's Play video audiences, and the way she continually attempts to influence your playthrough can be seen as a commentary on backseat gaming as well.
  • Lizard Folk: She's a monster that looks like a reptilian humanoid.
  • Lovable Lizard: She resembles a golden, crested lizard of some sort, and she is awkward in an endearing way.
  • Luminescent Blush: If the player chooses either Undyne or Asgore during Mettaton's quiz, as Mettaton goes into detail (choosing yourself makes her give you a bewildered look and not being sure has her argue with Mettaton). Being kissed by Undyne in the True Ending renders her red from head to toe and she topples over.
  • Manipulative Bitch: Mettaton reveals that the entire "killer robot" act was just a song-and-dance Alphys put him up to so she could involve herself in your adventure. Alphys never quite owns up to it, but she also never denies it (and in the friendship scenario, she expresses regret for what she did), and it's quite obvious on replaying the game that she's manipulating you. Though to her credit, this plan was a gambit to convince the player not to leave and risk getting into a deathmatch with Asgore.
  • Meaningful Name: Her name is a meaning for being intellectual and having an interest in research. It also can be an anagram of 'Shy Pal' or be a conjunction of 'Algebra' and 'Physics'.
  • Mission Control: She acts as this throughout Hotland, frequently calling you and giving you remote help from her lab. This is eventually revealed to be a scheme to improve Alphys' self-confidence.
  • Morality Pet: For Mettaton. It eventually becomes clear that, for all his bragging, snark at her expense, and occasional frustration with Alphys, he really does care very deeply about her, and is incredibly grateful for her role in making him famous. In the Neutral route where he winds up in charge of the Underground and Alphys has gone missing (implied to have committed suicide), he expresses regret, saying he wanted her to rule with him, and erects a statue of her. In short, Mettaton's friendship with her is easily one of his more redeeming qualities.
  • Motherly Scientist: She acts like this towards the Amalgamates.
  • Motor Mouth: Whenever Alphys brings up anime that she likes, she has a tendency to ramble on without pause until she catches herself (in hilariously stark contrast to her usual stuttering and stammering). The last time she does it plays this for drama on the True Pacifist run, when Alphys confesses to Undyne that all the "human history" they watched together was nothing but nerdy cartoons and that she had been lying to her.
  • My Greatest Failure:
    • She claims turning Mettaton into an anti-human defense mechanism and failing to turn off his inhibitors was this. This is eventually revealed to have been a lie to create artificial danger she could save you from.
    • Her actual greatest failure is her DETERMINATION experiments, which have turned numerous monsters into Body Horror amalgamates, as well as having created Flowey.
    • In a near Genocide routenote , she seems to consider doing nothing for so long and just watching the player kill monsters as this, lamenting on how waiting until Undyne called her in crazed desperation before doing something cost Undyne and multiple monsters their lives and not killing the player when she had the chance.
  • Nerd Glasses: She wears glasses, she's a scientist, and she avoids talking to others.
  • Nerds Are Sexy: In Undyne's opinion, at least.
  • Nervous Wreck: Alphys is easily prone to panic: her introduction scene consists of her panicking because she didn't expect you to come so early.
  • Nice Job Breaking It, Hero!:
    • Her experiments involving DETERMINATION led to the creation of Flowey, a being that had the "will to live" but no soul, and therefore no capacity for compassion or love.
    • By assisting the player if they've murdered enough monsters to drive the survivors into anger and/or despair. Depending on the player's actions, Alphys may even be Driven to Suicide by the game's end.
  • No Control Group: Her methods of experimentation seem to go directly to the implementation phase without testing.
  • Non-Mammal Mammaries: Her anatomy is never clearly displayed because of her hunched pose and baggy clothing, but in the epilogue she is seen wearing a women's swimsuit, implying this.
  • Official Couple: Becomes this with Undyne in the true ending route.
  • Oh, Crap!: Several times. A standout example is when she realizes that Flowey — the ultimate product of her experiments — is the one who told Papyrus to call everyone to Asgore's castle, and even worse, it wasn't for a party, but for their souls.
  • Omnidisciplinary Scientist:
    • Among her areas of expertise: robotics, repairing and upgrading human technology, hammerspace access, bio-engineering, and turning Waterfall's grass into ice cream.
    • Subverted in that while she is clearly great with physics, engineering, and mechanics, she was way out of her depth with DETERMINATION and SOU Ls as shown by the disastrous results with all her experiments.
  • Only Sane Woman: She's the only one who doesn't try to fight you during the genocide run, instead focusing on evacuating the citizens from Hotland.
  • Otaku: She rarely gets out of her lab, is obsessed with anime, comics, and video games, and even has cups of instant noodles in her fridge. She has passed some of her otaku-ness to Undyne, who will beg the player to answer if anime is real at one point.
  • Post-Kiss Catatonia: In the True Pacifist ending credits, Undyne kisses her on the cheek and she turns completely red before falling over with a "9999" speech bubble next to her.
  • Red Oni, Blue Oni: Shy, socially awkward Blue to Undyne's Hot-Blooded and Mettaton's hammy Reds.
  • Reed Richards Is Useless: Zigzagged. While some of Alphys' technology is commercially available to monsters, much of her more fantasical inventions (like phones with jetpack features, hammerspace access, and so on) she's kept for herself and only provides them to the human child in the Neutral or Pacifist runs.
  • Robosexual: Implied. She keeps anime of robots making out saved to her phone for some reason, and she had trouble finishing Mettaton's EX body because she got "really sweaty" whenever she tried to work on it.
  • Shipper on Deck: To Asgore/Toriel in the true ending, if you say "yes" when she asks you if you think they'll get back together. If you say "no", she admits that you're probably right.
  • Shock and Awe: During the ending sequence of a Pacifist run, she blocks Flowey's attack with a wall of electricity.
  • Shrinking Violet: Alphys is very shy, nervous and anxious and even admits that before meeting the protagonist, she didn't use to like herself very much and on her date, she says that she doesn't like who "herself" is. This is mostly caused by regret she feels for creating the Amalgamates.
  • Significant Anagram: Possibly unintentional, but "Alphys" rearranged can be "Shy Pal", which describes her perfectly: a socially awkward individual who just wants to be the protagonist's friend.
  • Tertiary Sexual Characteristics: Enforced. In the artbook, it is stated that Alphys was originally planned to be male, but Toby Fox disliked the idea in the end and ended up adding eyelashes onto her.
  • Tested on Humans: Or more accurately, monsters. She does this accidentally with Asriel/Flowey, and directly with the Amalgamates.
  • Tomboy and Girly Girl: Girly girl to Undyne's tomboy.
  • Trademark Favorite Food: She enjoys instant noodles and other junk food, judging by her fridge. Makes sense when she needs to work on her experiments or spends hours watching anime.
  • The Unfought: She is the only major character who never attacks the protagonist, as Mettaton's attacks are used for her as a Lost Soul in the Pacifist Ending.
  • This Is Unforgivable!: In the Near Genocide Ending,note  she becomes the leader of the (remaining) monsters after saving them from you. She calls for no other reason than to tell you she hates you.
  • Unwitting Instigator of Doom: You don't say. Her experiments with DETERMINATION led to Asriel's manifesting as Flowey and dying monsters turning into Amalgamates. She's very unhappy about that.
  • Voice Grunting: Sounds like a buzzer. It only amps up her dorkiness, getting across how awkward and shy she is.
  • Walking Spoiler: Anything relating to her real motivation for helping you in the Hotland portion of the game, and especially the True Laboratory and her past cements her as one of these. All of them culminates her being responsible for the creation of the Big Bad.
  • Wham Line: The penultimate log entry you find in the True Lab pertains to her decision to inject Determination into something neither human nor monster...and it's the first flower in Asgore's garden; the one that absorbed his dead son Asriel's essence. The one immediately after that?
    The flower is gone.
  • Wingding Eyes: Alphys also has hearts in her eyes when she thinks Undyne is going to train her.
  • Wrong Genre Savvy: Alphys thinks that she can insert herself into your journey, with Mettaton's help, and have it play out like a fanfiction where she convinces you to stay in the Underground. Unfortunately, this game isn't fanfiction and Mettaton knows it.
  • Yank the Dog's Chain: During the True Lab, and boy, does the chain ever get yanked.
    I’ll send everyone back tomorrow. :)
  • You Are Better Than You Think You Are: Her character arc revolves around her difficulty believing this - and her confronting the past mistakes responsible for it, in a Pacifist run. Additionally in a Near-Genocide Neutral Run, note  she is hailed as a Hero by the Surviving Monsters and elected to be ruler because of her role in organizing the evacuation.
  • You Monster!: In one of the worst Neutral endings (which you get by aborting a Genocide run in Hotland), she calls you on the phone to say that she hates you and that she should have killed you when she had the chance.

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