Symbiotes

Creatures or aliens that facilitate transformation in humans, in return for the pleasure or benefits they derive from the change.

  Child of:  Nonhuman. Related tags:  Aliens;Androids/Cyborgs;Goo People;Symbiotes.

  Tag Group:  Scifi.

A 2

An airplane parasite by SomeMuscleGuy After bumping into the wrong person at the airport, Michael is infected with a parasite that was on its way to be destroyed. This parasite only has one goal in mind: Growth. Massive Growth. 4,977 words Added Oct 2022 29k views 4.8 stars (32 votes) •Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Hyper Cum•Multi-abs•Hyper Muscle•Hyper Strength•Immobility•Muscle Growth•Butt Growth•Foot Growth•Transformation•Voice Deepening•Getting Taller•Giants•Size Increase•Destruction/Violence•Nonconsensual change•Infectious•Aliens•Symbiotes •M

Alien implants (revised) by WordShop Three twenty-year-old military brats have a close encounter that leaves behind unexpected surprises for them all. How do three young guys deal with something that they cannot even begin to explain or understand? Not to mention the very strange dreams… 2 parts 3,079 words Added Nov 2017 25k views 3.7 stars (15 votes) •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Hair Growth/Getting Hairy•Symbiotes

B 4

The Black Knights by Meddler Incs Once you join the infamous college team known as the Black Knights, there are only three things that matter: lifting, fucking, and football. 4 parts 6,479 words Added Aug 2016 Updated 19 May 2017 24k views 4.6 stars (29 votes) •Muscle Growth•Muscle/Strength•Symbiotes •M/M•M/M/M/...

The Black Knights: Brandon by Meddler Incs “So ya wanna be a jock, bro?” Baker asks. Yeah, Brandon so wants to be a jock. 645 words Added Sep 2018 12k views 4.6 stars (7 votes) •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Symbiotes

The Black Knights: Coming home by Meddler Incs When an ex-football player, now a local newspaper reporter, investigates The Black Knights, he gets more than he bargained for. 14 parts 24k words Added Oct 2018 Updated 21 Dec 2019 21k views 4.9 stars (16 votes) •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Size Increase•Nonconsensual change•Aliens•Symbiotes •M/M•M/M/M

The book of desires by SomeMuscleGuy After stealing a corrupted book at the gym, Michael is left growing uncontrollably by a Symbiotic Demon that only wants to swell its victims with the most size possible. But even the demon underestimates just how gigantic Michael wants to become. 7,676 words Added Dec 2022 21k views 4.9 stars (10 votes) •Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Hyper Cum•Public Orgasm•Multi-abs•Addiction•Hyper Muscle•Hyper Strength•Immobility•Muscle Growth•Muscle Worship•Public Nudity•Butt Growth•Foot Growth•Transformation•Voice Deepening•Getting Taller•Giants•Size Increase•Destruction/Violence•Nonconsensual change•Infectious•Aliens•Symbiotes•Complete•Stories with Images •M

C 1

Cursed compression top by Rurik A cursed compression top will transform its wearer beyond his wildest dreams. 3 parts 3,136 words Added May 2020 Updated 27 Jun 2020 14k views 4.6 stars (18 votes) •Muscle Growth•Transformation•Body Suit•Symbiotes •M/M

L 1

Dragon’s Horde: Lowered into the drink by STrRedWolf Be careful what you drink, because you may become the monster of your dreams before paying the price... your bar tab. 1,605 words Added Oct 2017 11k views 4.0 stars (1 vote) •Huge Cock•Hyper Cock•Multihead•Multiarm•Multilimb•Multipec•Replication•Stacking•Muscle Growth•Muscle/Strength•Giants•Selfcest•Symbiotes•Anthro/Furry•Alcohol

M 1

Matt and his dad by Meddler Incs When Matt comes home to visit his dad, he is forced into being part of The Crew. 3,343 words Added Jun 2020 16k views 4.4 stars (9 votes) •Huge Cock•Straight to Gay•Muscle Growth•Muscle/Strength•Incest•Father/Son•Nonconsensual change•Symbiotes•Hypnosis •M/M

P 1

Parasitic paradise by SomeMuscleGuy After over a year of committing himself to a healthier lifestyle, Kyle finds himself down on his luck about his physical progress. Wanting to cheer him up, his boyfriend, Dom, surprises him with a ritual that is meant to help them grow. What neither realizes is that the being they summoned doesn't just want to see them grow. It wants them to see them ascend. 3 parts 13k words Added Oct 2023 Updated 16 Dec 2023 16k views 4.8 stars (15 votes) •Always Hard•Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Always Cumming•Public Orgasm•Addiction•Hyper Muscle•Hyper Strength•Muscle Growth•Muscle Worship•Increased Libido•Foot Growth•Gradual Change•Voice Deepening•Getting Taller•Giants•Size Increase•Dom/Sub•Infectious•Aliens•Symbiotes•Tentacle•Demons•Complete •M/M•M/M/M

Q 1

The queen by Dylan Utah As a big muscle alpha on campus, Peter had been used to admiration and envy. What he didn’t expect was to be captured and used for his growing muscles and cock. 880 words Added Aug 2020 13k views 4.1 stars (8 votes) •Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Hyper Cum•Immobility•Muscle Growth•Muscle/Strength•Nonconsensual change•Symbiotes

S 3

It was a dark night by InflatedMuscle Gym rat Dane has an encounter with an alien symbiote, complicating not only his own life but his friends’ as well. 5 parts 34k words Added Oct 2022 Updated 15 Oct 2022 14k views 4.8 stars (16 votes) •Addiction•Straight to Gay•Hyper Muscle•Muscle Growth•Muscle/Strength•Nonconsensual change•Aliens•Symbiotes •M/M

Speedo transformation by bruce That castmate in your high school play with the hot cock, great body, and perfect ass has a secret: special Speedos. And he’s very willing to share. 2,096 words Added Feb 2009 61k views 3.9 stars (17 votes) •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Transformation•Symbiotes

The suit life by Sithspawn Max’s housemate Jake creates a protoplasmic suit to heal soldiers in the field and decides to try it out at home. What could possibly go wrong? 5,597 words Added Apr 2022 9,573 views 4.8 stars (19 votes) •Cock Growth•Huge Cock•Muscle Growth•Size Increase•Body Suit•Tongue Growth•Nonconsensual sex•Symbiotes•Superhero/Supervillain•Shapeshifting •M/M