40 results for gaster. - [Star Sex: Pilot](https://fse.anthro.fr/stories/1421345-star-sex-pilot.md) Author: xerox2 Tags: Alien, Anthro, Bug, Eggs, FTM, Female, Gender Shifting, Hyena, Insect, Male, Masturbation, Monstergirl, MtF, Oral, Oviposition, Ovisposition, Pseudopenis, Sci-Fi, Sex, Transformation, feminization - [Reports Of A Grey Door](https://fse.anthro.fr/stories/981797-reports-of-a-grey-door.md) Author: FurryPlague Tags: Alphys, Blaster Gaster, Cum, Deep Throat, Doggystyle, Erection, Female, For Research, Gaster, Heat, Hotland, Kissing, Knotting, Lab, Magic, Male, Mating, Oral, Orgasm, Rape, Sex, Sexual, Story, Studing, Undertale, Waterfall, instincts, research, scientist - [Alphys' Modern Life: Camera Shy (Part 1)](https://fse.anthro.fr/stories/1084571-alphys-modern-life-camera-shy-part-1.md) Author: xandermartin98 Tags: Abuse, Adorable, Adorkable, Adult Content, Alphys, Anal, Anime, Anthro, Asgore, Asriel, Bestiality, Bisexual, Blood, Blush, Bondage, Breastfeeding, Breasts, Burgerpants, Canine, Caprine, Cartoon, Cartoony, Cat, City, Comedy, Creampie, Crossover, Cum, Cumshot, Cunnilingus, Cute, Dancing, Dog, Ears, Ejaculation, Eldritch Abominations, Endosomatophilia, Erection, Erotic, F/F, Fanfiction, Fantasy, Feet, Femdom, Fetishes, Fighting, Fish, Flowey, Foot Fetish, French Kissing, Giant, Glasses, Goat, Godzilla, Horns, Humiliation, Humor, Incest, Insanity, Kissing, Lesbian, Licking, Lizard, Love, M/F, Macro, Masturbation, Memes, Menstruation, Messy, Mettaton, Mind Control, Monster, Musical, Naked, Naughty, Nickelodeon, Nudity, Odors, Oral, Orgasm, Papyrus, Parody, Pheromones, Police, Porn Flick, Pornography, Posing, Prison, Public, Pussy, Rabbit, Relationships, Reptile, Robophilia, Robot, Rocko's Modern Life, Roller Coasters, Romance, Rule 34, Sans, Satire, Scalie, Semi Consensual, Sex, Sexy, Shrinking, Singing, Size Difference, Skeleton, Song Parody, Suicide, Tail, Tailhole, Teasing, Tits, Toriel, Undertale, Undyne, Vaginal, Video Games, Voyeurism, WORSHIP, brains, cameras, dating, dinner, drooling, embarrassment, giantess, gross, moaning, privacy, shipping, skiing, spaghetti, toes - [Alphys' Bad School Day (PART 3)](https://fse.anthro.fr/stories/1086695-alphys-bad-school-day-part-3.md) Author: xandermartin98 Tags: Comedy, Fanfiction, Romance, Undertale - [An Experiment Gone Wrong? CH.4 (Rewrite)](https://fse.anthro.fr/stories/1084690-an-experiment-gone-wrong-ch-4-rewrite.md) Author: Wisk_Sith_Kulux Tags: Asgore, Asriel Dreemurr, Frisk, Gaster, Hurt/Comfort, Named OC, Papyrus, Sans, Toriel, Undertale, Undertale AU, Undyne, chara - [An Experiment Gone Wrong? CH.8 (Rewrite)](https://fse.anthro.fr/stories/1084694-an-experiment-gone-wrong-ch-8-rewrite.md) Author: Wisk_Sith_Kulux Tags: Asgore, Asriel Dreemurr, Frisk, Gaster, Hurt/Comfort, Named OC, Papyrus, Sans, Toriel, Undertale, Undertale AU, Undyne, chara - [Hidden](https://fse.anthro.fr/stories/565102-hidden.md) Author: Leo_Todrius Tags: Alien, Anal, Dark, Gay, Insect, M/M, M/solo, Oral, Oviposition, Sci-Fi, Transformation, Wasp, infection, paralysis, self suck, tf - [Alphys VS Undyne](https://fse.anthro.fr/stories/1046939-alphys-vs-undyne.md) Author: xandermartin98 Tags: Abuse, Adorable, Anal, Anime, Anthro, Bikini, Bisexual, Breastfeeding, Breastplay, Comedy, Cum, Cumshot, Cute, Dancing, Domination/Submission, Ear Fetish, Ejaculation, Erection, Family, Fanfiction, Female, Femdom, Fighting, Fish, Foot Fetish, French Kissing, Friendship, Gang-Rape, Gay Relationships, Genital Vore, Glasses, Handjob, Humiliation, Incest, Insanity, Kinky, Kissing, Lesbian, Licking, Lizard, Love, Masturbation, Mermaid, Mind Control, Nudity, Orgasm, Parody, Public, Rape, Reptile, Romance, Satire, Scalie, Sex, Singing, Soulmates, Strangulation, Striptease, Tail, Teasing, Tentacles, Tickling, Underwear, Vaginal, Video Games, Vore (soft), Voyeurism, Wrestling - [Heroes of Hopes and Dreams](https://fse.anthro.fr/stories/1746222-heroes-of-hopes-and-dreams.md) Author: XD-385 Tags: Action, Comic Book, Epic, Fighting, Human, MLP, Mettaton, Music, Ocellus, Papyrus, Robot, Sans, Smolder, Undertale, Undyne - [Alphys' Bad School Day (PART 2)](https://fse.anthro.fr/stories/1086693-alphys-bad-school-day-part-2.md) Author: xandermartin98 Tags: Comedy, Fanfiction, Romance, Undertale - [An experiment gone wrong? Part 4](https://fse.anthro.fr/stories/945283-an-experiment-gone-wrong-part-4.md) Author: Wisk_Sith_Kulux Tags: Asgore, Asriel, More characters to come, Original Character, Toriel, Undertale - [An experiment gone wrong? Part 5](https://fse.anthro.fr/stories/947243-an-experiment-gone-wrong-part-5.md) Author: Wisk_Sith_Kulux Tags: Asgore, Asriel, Gaster, Original Character, Sans, Toriel, Undertale, chara Next page: https://fse.anthro.fr/stories?page=2