Octoexpansion Stories

266 Stories

New Squidbeak Splatoon: Uprising by ToonThink
New Squidbeak Splatoon: Uprisingby Toon Think
In the bad ending of the Octo Expansion, Inkopolis and everyone in it is destroyed, with Cap'n Cuttlefish, Agent 8, Agent 3, and Off the Hook left to pick up the pieces...
One left (Splatoon fem human reader) by LU1EAS
One left (Splatoon fem human reade...by LU1EAS
In a strange turn of events, a human emerges from their slumber, a species known to their immunity to ink and water. This gives the inklings and octolings a chance to en...
Inkopolis' Anomaly by Johonix-zxy
Inkopolis' Anomalyby Johonix zxy
A disaster that could've been prevented but wasn't, caused Y/N to lose everything. In a desperate attempt, Y/N's family placed them into a cryo pod, ultimately freezing...
Splatoon x Male Reader by DForrester
Splatoon x Male Readerby DForrester
You are just an average inkling in Inkopolis Square, when you notice a strange person who changes your life. This story begins in Splatoon 2, but I will mark in the chap...
Splatoon Harem by Tadayoshiscott
Splatoon Haremby Scotty Boi
Tadayoshi never liked having attention, and always wanted to be alone, but when he was chosen to become agent 4. His life not only changes, and his unknown past life beg...
╰☆☆ Yaoi ⚣ Agent 3 x͓̽ Agent 8 Pictures | Book 2 ☆☆╮ by xShezzax
╰☆☆ Yaoi ⚣ Agent 3 x͓̽ Agent 8 Pic...by dead account
♡♔❝Welcome to book 2 of your daily dose of boy x boy Agent 24, because my other book ran out of space due to Wattpad's annoying chapter limit.❞♔ ✮All pictures belong to...
Squidbeak Agency Adventures (Original) by SoulePurity
Squidbeak Agency Adventures (Origi...by Micah Soule
Octarians, machines, dangers of the depths, and more. It's all here when you embark on an adventure in Inkopolis and beyond. Please note that no pictures or characters...
💓Splatoon_Oneshots💋💓 by kumaaana
💓Splatoon_Oneshots💋💓by Kumaa
basically regular one shots of Splatoon ever but more G A Y E R. surprising right? request whatever you want. except boyxgirl(that'll only happen if there's angst) b/c...
what... have I done..? [Rider x Sanitized Goggles] by ADreamingWish
what... have I done..? [Rider x Sa...by ☆Dreamin'☆
"why was I so mean to you... now.. now you're gone... you're not here... not fully... I'm so.. so sorry.. goggles..." ~ Rider Story was inspired by the: Saniti...
Agent 38: In The Making by ViviOcto12
Agent 38: In The Makingby Viv
Heyo! This is my first Splatoon fanfic here, so I hope it's not too cringy. A bit of swearing (maybe), but overall, pretty friendly (I hope). I'd say 10+ for ages. And n...
Splatoon: Agent 8 x Agent 3 by Potato_Universe
Splatoon: Agent 8 x Agent 3by Ramenbroth
Male Agent 8 x Female Agent 3 After the Tartar's disastrous attempt to destroy Inkopolis Square and the remaining species on earth, Agent 8 finally arrives on the sur...
✮Two Breaths Walking | Agent 3 x͓̽ 8 |Yaoi✮ by xShezzax
✮Two Breaths Walking | Agent 3 x͓̽...by dead account
!OCTO EXPANSION SPOLIERS! (Male Agent 3 x Male Agent 8-Yaoi⚣) Octolings have arrived and have been welcomed into Inkopolis, almost all of them owning a place of their ow...
Kirby in Splatoon 2: New Colors, New Adventures by DeeDragon438
Kirby in Splatoon 2: New Colors, N...by Warp Star Octo
It's been about two years since Kirby returned to Planet Popstar. Every day since he returned, he couldn't help but miss his friends in Inkopolis. But one day, the pipe...
~My one and only Agent~ by aestheticjbby03
~My one and only Agent~by aestheticjbby03
Agent 8, finally freed from the octarian menace and is adjusting to the surface, with the help of Agent 3 and her friends, they'll guide our new protagonist to fit in wi...
Sweet Dreams | Splatoon by sharkbytez
Sweet Dreams | Splatoonby Sharkie
Agent 8's nightmares are getting worse every night. What will happen when her nightmares become reality? After a disastrous splatfest, Agent 8 is captured yet again. Man...
𝗶𝗻 𝗮 𝗻𝗲𝘄 𝘄𝗼𝗿𝗹𝗱 - 𝘀𝗽𝗹𝗮𝘁𝗼𝗼𝗻 𝟮 / ✔️ by mb-lovelyy
𝗶𝗻 𝗮 𝗻𝗲𝘄 𝘄𝗼𝗿𝗹𝗱 - 𝘀𝗽𝗹...by ❤︎ ɴᴇᴏɴ ❤︎
➪ "And that's when her life changed forever by the sweet tunes of the Squid Sisters." . . . Agent 8 has finally reached the "Promised Land" and recon...
Bleached Of The Curse (Splatoon x Male reader) by yangg1no
Bleached Of The Curse (Splatoon x...by [Yang]gino
(Y/N) is a victim of an experiment on an island near Inkopolis. The goal of the experiment was to create an Inkling resistant to ink. Many test subjects died because of...
Black Hybrids ~The 38 Saga's 4th Book~ by Madyorkshiregal
Black Hybrids ~The 38 Saga's 4th B...by Catalyst
[Slow Updates] 14 years with peace and quiet; 14 years with no major disturbances; 14 years of Petra being dead, Pearl grieving and the agents of the Squidbeak Splatoon...
Opposites Attract ~The 38 Saga 1st Book~ by Madyorkshiregal
Opposites Attract ~The 38 Saga 1st...by Catalyst
Agent 8 is challenged with his new life, after being freed from the Octarian Menace and escaping Deepsea Metro, and everything that comes across his way. Lovers, friends...