Penname: xandermartin98 [Contact] Real name: Xander Martin
Member Since: July 17 2016
Membership status: Member
Bio:

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Stories by xandermartin98
Summary:

In probably the second-best part of one of the greatest Undertale fanfics of all time (Alphys' Bad School Day), Alphys and company reach the final portion of their very first day of junior high school in Hotland; why, Gaster's biology class, of course!

However, just like everything else that ends up happening in this story, the class' subject matter of the day is nowhere near what you would expect from any normal school; in fact, the students' assignment for the day is none other than to strap on a set of nanosuits, shrink themselves down to practically microscopic size and venture inside Toriel's body so that they can explore her beautifully vast and complex system of internal organs, and perhaps even theoretically learn a thing or two about how said organs work in the process!

Of course, however, the students' actual intentions during the assignment are anything but educational; in fact, as it turns out, Gaster's plan the whole time was actually to have Alphys and her friends sneak inside Toriel's brain and take control over her body to make her have the sexual intercourse of her life with her husband Asgore in the janitor's closet!

Do I really need to explain how fucked-up this is?
Categories: Giantess, Teenager (13-19), Adventure, Breasts, BBW, Body Exploration, Middle Age (50+), Butt, Couples, Entrapment, Fantasy, Feet, Furry, Futanari, Humiliation, Insertion, Instant Size Change, Lesbians, Maternal, Mouth Play, Nose, Odor, Unaware, Vore, Watersports
Characters: None
Growth: None
Shrink: Nano (1/2 in. to 2.5 nanometers)
Size Roles: F/f, F/m
Warnings: Following story may contain inappropriate material for certain audiences, This story is for entertainment purposes only.
Series: None
Chapters: 1 Table of Contents
Completed: Yes Word count: 6511 Read Count: 3542
[Report This] Published: October 15 2016 Updated: October 15 2016
Summary: In what is easily one of the most fetishistic Undertale fanfiction scenes of all time, Undyne shows her true lesbian love for Alphys in an utterly demented series of events that would make even the craziest of giantess fetishists blush.

Case in point: if you ever wanted to see Undyne lovingly worship Alphys' entire sleeping body from head to toe, sneak into her brain through her ear canal, make her dance naked to Mew Mew Kissy Cutie while fucking the Amalgamates, and even crawl into her vagina and sleep in it (among other things, obviously), then you've definitely come to the right place.
Categories: Unaware, Giantess, Adventure, BBW, Breasts, Body Exploration, Couples, Feet, Crush, Fantasy, Furry, Futanari, Humiliation, Insertion, Instant Size Change, Lesbians
Characters: None
Growth: None
Shrink: Micro (1 in. to 1/2 in.)
Size Roles: F/f
Warnings: Following story may contain inappropriate material for certain audiences, This story is for entertainment purposes only.
Series: None
Chapters: 1 Table of Contents
Completed: Yes Word count: 4183 Read Count: 11324
[Report This] Published: July 17 2016 Updated: July 17 2016
Summary:

In quite possibly THE most fucked-up Undertale fanfic of all time (and probably the saddest, to be perfectly honest with you), Flowey goes inside Alphys' head and takes control over her brain, seeking revenge for what Alphys did to him and his mother back in the Motherly Fuckery and Incestual Apocalypse days. How, you may ask?

Why, only by making her actively, knowingly destroy literally everything she loves and holds dearly and mercilessly torturing her to horrifyingly bloody, violent and gruesome DEATH, of course!


Categories: Giantess, Teenager (13-19), Adventure, Young Adult 20-29, Breasts, Body Exploration, Middle Age (50+), Butt, Couples, Crush, Destruction, Entrapment, Fantasy, Feet, Furry, Futanari, Growing Woman, Humiliation, Incest, Insertion, Instant Size Change, Lesbians, Maternal, Mouth Play, Nose, Scat, Slave, Violent, Vore, Watersports
Characters: None
Growth: Giant (31 ft. to 50 ft.)
Shrink: Lilliputian (6 in. to 3 in.)
Size Roles: F/m
Warnings: Following story may contain inappropriate material for certain audiences, This story is for entertainment purposes only.
Series: None
Chapters: 2 Table of Contents
Completed: Yes Word count: 14766 Read Count: 2776
[Report This] Published: October 19 2016 Updated: October 19 2016
Summary: In quite possibly the greatest and most awkward scene/moment to ever come out of Undertale fanfiction so far, Chapter 4 of Alphys' Modern Life: Camera Shy has Alphys growing herself to massive Godzilla size in order to stop the now-equally-massive Mettaton from utterly wrecking what is basically the Underground's equivalent to New York City.

However, her plan ends up hilariously backfiring when Mettaton throws her headfirst through several buildings and dazes her immensely, giving Asriel the perfect opportunity to sneak inside her head through one of her ears using his magical flying/shrinking powers and then use his newfound control over her brain to wreak all kinds of humiliating havoc...

mainly making her dance erotically to Careless Whisper with Mettaton while the poor robot cringes in self-contained embarrassment from the fact that mostly everyone in the city is watching XD
Categories: Unaware, Giantess, Adventure, BBW, Body Exploration, Couples, Destruction, Crush, Fantasy, Feet, Furry, Giant, Growing Woman, Humiliation, Incest, Insertion, Instant Size Change
Characters: None
Growth: Titan (101 ft. to 500 ft.)
Shrink: Minikin (3 in. to 1 in.)
Size Roles: FM/m
Warnings: Following story may contain inappropriate material for certain audiences, This story is for entertainment purposes only.
Series: None
Chapters: 1 Table of Contents
Completed: Yes Word count: 2695 Read Count: 3768
[Report This] Published: October 09 2016 Updated: October 09 2016
Summary: In what can only be described as the much more erotically-focused Parappa The Rapper equivalent to the infamous Motherly Fuckery from the Undertale fandom, Parappa shrinks himself and goes inside Lammy's head, and...well, I'm not even going to spoil how shit ends up going from there; just see for yourself, and be appalled.
Categories: Young Adult 20-29, Giantess, Adventure, Breasts, BBW, Body Exploration, Butt, Couples, Crush, Fantasy, Feet, Furry, Futanari, Humiliation, Incest, Instant Size Change, Lesbians, Maternal, Mouth Play, Muscle, Nose, Odor, Scat, Slave, Unaware, Violent, Vore, Watersports, Teenager (13-19)
Characters: None
Growth: None
Shrink: Lilliputian (6 in. to 3 in.), Nano (1/2 in. to 2.5 nanometers)
Size Roles: F/m
Warnings: Following story may contain inappropriate material for certain audiences
Series: None
Chapters: 6 Table of Contents
Completed: Yes Word count: 19045 Read Count: 6719
[Report This] Published: February 20 2017 Updated: February 20 2017
Summary: In the official finale to Alphys VS Undyne's incredibly disturbing giantess offshoot series, we learn just how fucked-up things can really get in it.

And by "how fucked up", I mean as in Alphys invading Toriel's brain in just about the most painful way possible without killing her, then mind-controlling her into brutally raping her own son and husband in just about every single way possible, prompting them to then rape HER back.

Now THAT'S some fucked-up shit, Undertale fanfic or not.
Categories: Teenager (13-19), Giantess, Adventure, Breasts, Body Exploration, Butt, Couples, Entrapment, Fantasy, Feet, Furry, Humiliation, Incest, Insertion, Instant Size Change, Mouth Play, Odor, Scat, Slave, Violent, Vore, Watersports
Characters: None
Growth: None
Shrink: Micro (1 in. to 1/2 in.)
Size Roles: F/m
Warnings: Following story may contain inappropriate material for certain audiences, This story is for entertainment purposes only.
Series: None
Chapters: 1 Table of Contents
Completed: Yes Word count: 8314 Read Count: 1567
[Report This] Published: September 24 2016 Updated: September 24 2016
Summary:

In what is more than likely THE absolute kinkiest Undertale fanfic of all time, Asriel, after watching way too much Alphys VS Undyne, decides to re-enact the series' infamous giantess Alphyne scenes, only with him and Toriel! Needless to say, things get REALLY fetishistic and REALLY fucked-up REALLY freaking fast; trust me, you have been warned.


Categories: Vore, Giantess, Teenager (13-19), Adventure, Humiliation, Breasts, BBW, Body Exploration, Feet, Furry, Futanari, Incest, Insertion, Instant Size Change, Maternal, Nose, Scat, Unaware
Characters: None
Growth: None
Shrink: Micro (1 in. to 1/2 in.)
Size Roles: F/m
Warnings: Following story may contain inappropriate material for certain audiences
Series: None
Chapters: 1 Table of Contents
Completed: Yes Word count: 9484 Read Count: 3827
[Report This] Published: August 27 2016 Updated: August 27 2016
Summary: In a far more intensely fetishistic and disturbing role-swapped sequel to the Giantess Alphys X Undyne scene from Alphys VS Undyne, Undyne shrinks Alphys to nearly microscopic size and shows her what REAL giantess femdom is...luckily, however, Alphys still has a few tricks up her sleeve! Can you guess which ones I'm talking about?
Categories: Mouth Play, Giantess, Adventure, Breasts, BBW, Body Exploration, Butt, Couples, Crush, Entrapment, Fantasy, Feet, Furry, Futanari, Humiliation, Insertion, Instant Size Change, Lesbians, Scat, Violent, Vore, Watersports, Nose, Muscle
Characters: None
Growth: None
Shrink: Minikin (3 in. to 1 in.), Nano (1/2 in. to 2.5 nanometers)
Size Roles: F/f
Warnings: Following story may contain inappropriate material for certain audiences, This story is for entertainment purposes only.
Series: None
Chapters: 1 Table of Contents
Completed: Yes Word count: 4845 Read Count: 1796
[Report This] Published: August 12 2016 Updated: August 12 2016
Summary: (ORIGIN: Chapters 4-5.5 of HBACSAPS)

Just when you think that Xander's brain fetish simply can't get any worse, this scene (hell, pretty much the entire Grinch-spoofing story that it came from, for that matter) comes along and proves you wrong...and yes, I'm well aware that that rhymed.

Despite being an incredibly great and overlooked fanfic that just so happens to be a remarkably clever and affectionate parody of no less than three different things at the same time (Undertale, xandermartin98's fanfiction library for it, Dr. Seuss' Grinch) with some really phenomenally executed writing and humor (and fap material), I can still admit that this story in particular gets REALLY out of hand with the whole brain thing, with this scene being easily the absolute definitive example.

Personally, I would highly recommend bringing a good amount of brain BLEACH for what ends up happening here; seriously, don't be fooled by the fact that it starts out as a perfectly normal Donald/Hillary election parody speech between Bratty and Catty, because before you know it, the story pulls a lesbian SIX-some on you, with two of those six actually being mutated synthetically cloned pieces of Bratty's and Catty's brains (that Alphys and Undyne are busy having SEXUAL INTERCOURSE with, naturally enough). Obligatory link to full story: https://www.fanfiction.net/s/12320570/1/How-Bratty-and-Catty-Stole-America-s-Presidential-System
Categories: Giantess, Teenager (13-19), Adventure, Young Adult 20-29, Breasts, BBW, Body Exploration, Butt, Couples, Destruction, Fantasy, Feet, Furry, Futanari, Humiliation, Incest, Insertion, Instant Size Change, Lesbians, Nose, Sci-Fi, Unaware, Violent
Characters: None
Growth: None
Shrink: Nano (1/2 in. to 2.5 nanometers)
Size Roles: F/f
Warnings: Following story may contain inappropriate material for certain audiences, This story is for entertainment purposes only.
Series: None
Chapters: 1 Table of Contents
Completed: Yes Word count: 6328 Read Count: 1444
[Report This] Published: January 13 2017 Updated: January 13 2017
Summary: What starts out as a relatively tame and normal vore fanfic about Katy Kat coming down with a nasty case of the feline flu and therefore needing to have Parappa and Ma-San inserted into her body by Lammy to combat the disease Fantastic-Voyage-style quickly degenerates into quite possibly THE most shamelessly brain-fetishistic thing you'll ever read.

(Also, Lammy and Katy FINALLY have full-fledged sex with each other.)
Categories: Young Adult 20-29, Giantess, Adventure, Breasts, BBW, Body Exploration, Butt, Couples, Entrapment, Fantasy, Feet, Furry, Futanari, Gentle, Humiliation, Incest, Insertion, Instant Size Change, Lesbians, Mouth Play, Nose, Odor, Scat, Violent, Vore, Watersports, Teenager (13-19)
Characters: None
Growth: None
Shrink: Nano (1/2 in. to 2.5 nanometers)
Size Roles: F/f, F/m
Warnings: Following story may contain inappropriate material for certain audiences, This story is for entertainment purposes only.
Series: None
Chapters: 1 Table of Contents
Completed: Yes Word count: 7540 Read Count: 1159
[Report This] Published: May 03 2017 Updated: May 03 2017
Summary: Blissfully unaware of the wakeup-mushroom-selling potion shop out in the Minish Woods, Link decides to try an alternate, far grosser method of getting the local Hyrule Castle Town shoemaker to make him a new set of Pegasus Boots...why, by shrinking himself to Minish size and sneaking his way into Rem's brain, of course! Please note: this story DOES indeed treat this as a sexual fetish.
Categories: Unaware, Teenager (13-19), Adult 30-39, Adventure, Body Exploration, Couples, Fantasy, Feet, Footwear, Gentle, Giant, Humiliation, Insertion, Instant Size Change, Nose
Characters: None
Growth: None
Shrink: Micro (1 in. to 1/2 in.)
Size Roles: M/m
Warnings: The Following story is appropriate for all audiences, This story is for entertainment purposes only.
Series: None
Chapters: 1 Table of Contents
Completed: Yes Word count: 2186 Read Count: 959
[Report This] Published: June 27 2017 Updated: June 27 2017
Summary: In a loving tribute, parody and Undertale counterpart to the legendary 1999 animated-film classic The Iron Giant, Alphys and Undyne (both simultaneously playing the role of Hogarth Hughes) get themselves wrapped up in a massive government conspiracy when a massive alien robot from another planet named Mettaton (obviously playing the role of the titular Iron Giant) crash-lands on Earth and arrives in the Underground; hilarity of all shapes and sizes ensues.
Categories: Teenager (13-19), Adventure, Body Exploration, Couples, Crush, Destruction, Entrapment, Fantasy, Feet, Furry, Futanari, Gentle, Giant, Humiliation, Incest, Insertion, Instant Size Change, Lesbians, Violent
Characters: None
Growth: Giant (31 ft. to 50 ft.)
Shrink: Doll (12 in. to 6 in.), Dwarf (3 ft. to 5 ft.), Nano (1/2 in. to 2.5 nanometers)
Size Roles: F/m, M/f
Warnings: Following story may contain inappropriate material for certain audiences, This story is for entertainment purposes only.
Series: None
Chapters: 17 Table of Contents
Completed: Yes Word count: 39423 Read Count: 7538
[Report This] Published: November 07 2016 Updated: November 07 2016
Summary: In probably the weirdest and kinkiest part of what is already the all-time weirdest and kinkiest thing (besides Alphamalg, anyway) to ever hit the Undertale fandom, Asriel and Muffet shrink themselves to small bug size and go inside Alphys' and Toriel's brains (respectively, of course) through their ear canals in order to take control over their bodies so that the two of them can have the foot orgy of a lifetime with Asgore and Undyne!

Oh, and in Alphys' case, there's also a lot of extremely graphic female foot-domination and vore involved in the process leading up to Asriel (very painfully) breaking into her head and ultimately taking mind control over her, so of course there's also that as well XD
Categories: Giantess, Teenager (13-19), Adventure, Breasts, BBW, Body Exploration, Middle Age (50+), Couples, Crush, Destruction, Entrapment, Fantasy, Feet, Furry, Futanari, Humiliation, Incest, Insertion, Instant Size Change, Lesbians, Maternal, Mouth Play, Odor, Unaware, Violent, Vore, Watersports
Characters: None
Growth: None
Shrink: Micro (1 in. to 1/2 in.), Minikin (3 in. to 1 in.)
Size Roles: F/f, F/m, FM/f
Warnings: Following story may contain inappropriate material for certain audiences, This story is for entertainment purposes only.
Series: None
Chapters: 1 Table of Contents
Completed: Yes Word count: 6367 Read Count: 1815
[Report This] Published: November 23 2016 Updated: November 23 2016
Summary: Finally; I've been waiting oh-so-very-very-long for the Undertale fandom to finally make this joke into a full-fledged reality, and now it's FINALLY here.

Gushing aside, however, this is a very simple, short and straightforward story; basically, Alphys gets infected with a slew of ghost-Chara-clone parasites that literally end up giving her the Undertale equivalent of cancer. Therefore, Undyne and Papyrus, who both have not even the first clue what properly trained surgery is, end up having to venture inside her body and its various internal organs in order to get them out.

Needless to say, all manner of awkwardness and hilarity ensue XD
Categories: Destruction, Giantess, Adventure, Body Exploration, Couples, Entrapment, Fantasy, Furry, Gentle, Humiliation, Insertion, Instant Size Change, Lesbians, Mouth Play, Scat, Unaware, Vore, Watersports, Young Adult 20-29
Characters: None
Growth: None
Shrink: Nano (1/2 in. to 2.5 nanometers)
Size Roles: F/f
Warnings: This story is for entertainment purposes only.
Series: None
Chapters: 1 Table of Contents
Completed: Yes Word count: 6759 Read Count: 1128
[Report This] Published: September 26 2016 Updated: September 26 2016
Summary: In which the former violently lobotomizes the latter
Categories: Body Exploration, Giantess, Adventure
Characters: None
Growth: Titan (101 ft. to 500 ft.)
Shrink: None
Size Roles: M/m
Warnings: Following story may contain inappropriate material for certain audiences, This story is for entertainment purposes only.
Series: None
Chapters: 1 Table of Contents
Completed: Yes Word count: 1378 Read Count: 510
[Report This] Published: October 05 2017 Updated: October 05 2017