Never played it? Start here. A plain-language walkthrough of the story and full cast — including the Jose Juan, SpongeWarrior and Spongelord encounters — written for newcomers who want the short version, not a wiki-style database dump.
| Creator | ChezzarCat |
| Latest version | V3 — "Fiesta en la Piscina" |
| Main characters | 9+ (see full list below) |
| Engine | Friday Night Funkin' (FNF) |
| Setting | A parody of Bikini Bottom |
The mod centers on Spongephanes, a self-proclaimed "underwater god" version of SpongeBob who challenges a hero named SpongeWarrior to a string of musical showdowns rather than a normal fight. From there, the cast widens fast — nearly every encounter introduces a new corrupted take on a Bikini Bottom regular, each tied to their own song, backstory, and reason for getting pulled into the chaos.
Across V1 to V3, the framing shifts from a smaller, contained horror setting into the V3 "pool party" arc, layering in pirate, hallucination, and revenge-driven subplots alongside the core Spongephanes-vs-SpongeWarrior conflict.
The mod's antagonist and host of the party — a self-styled "underwater god" version of SpongeBob who opens the mod by challenging SpongeWarrior to his "underwater game." Treats every confrontation as a performance.
The hero figure the story's prophecy points to as the one meant to stop Spongephanes — effectively the mod's version of the player-aligned protagonist in its earliest encounters.
A moodier, more menacing figure tied to the track "F is for Fevil." Functions partly as a teaser for a separate, related mod project by the same composer.
Introduced mid-song in "Sunderwater," confronting a character called Squidwirdy. One of the more unsettling reveals in the early tracklist.
A twisted take on Squidward, on the receiving end of Spongebud's confrontation in "Sunderwater" — plays a mostly reactive, dread-filled role in that encounter.
One of Spongephanes' closest allies, encountered by the player characters during "Catch and Fish" while exploring deeper waters near Galicia.
A grief-driven character central to "Bubbletwister," searching for a lost love after making a deal to enter what the mod calls "Underguater Limbo."
A corrupted transformation appearing in the V3 track "PARACETAMOL," triggered by a hallucination-inducing condiment incident at a restaurant run by a Krabs-like boss character.
A superhero-parody transformation in the V3 track "Powerscaling," riffing on the Mermaid Man & Barnacle Boy segments from the original SpongeBob show.
This is a partial cast list focused on the characters tied to released songs. The mod's full roster keeps growing with each update — the Funkipedia Mods Wiki maintains the most complete character index if you want every minor character and variant.
| Version | Setting | Tone shift |
|---|---|---|
| V1 | A contained horror-house take on Bikini Bottom | Establishes Spongephanes, SpongeWarrior, and the core horror-parody tone |
| V2 | Expanded version of the same setting | Builds out the roster without a major tonal shift |
| V3 | "Fiesta en la Piscina" pool party arc | Brighter setting on the surface, but adds pirate, hallucination, and revenge-driven subplots that push the horror elements further |
The narrative builds across three major versions, each layering new conflicts and expanding the scope of Spongephanes' underwater game.
The story begins with Spongephanes, a self-proclaimed "underwater god," challenging SpongeWarrior to a series of musical battles. This initial arc establishes the core horror-parody tone — a contained, unsettling take on Bikini Bottom where Spongephanes treats every encounter as performance art. The player faces Spongephanes directly, along with early corrupted residents like Spongelord and the unsettling Spongebud Squareguy during the "Sunderwater" sequence. V1 keeps the scope tight, focusing on the central prophecy that SpongeWarrior is meant to stop Spongephanes' underwater game.
The second version widens the cast without dramatically shifting the tone. More corrupted Bikini Bottom residents get pulled into Spongephanes' game, each tied to their own song and backstory. The encounters grow more varied, introducing characters like Jose Juan — one of Spongephanes' closest allies — during the "Catch and Fish" sequence near deeper waters. V2 builds out the world's mythology while keeping the focus on the musical showdown format that defines the mod.
The pool party arc represents the biggest tonal and narrative shift. On the surface, the setting brightens into a pool party framing, but underneath it layers in pirate subplots, hallucination sequences, and revenge-driven storylines. The V3 track "PARACETAMOL" introduces a hallucination-inducing condiment incident at a Krabs-like restaurant, transforming Bob into Mr. Ketchup. "Powerscaling" riffs on Mermaid Man & Barnacle Boy with a superhero-parody transformation. The pirate subplot adds new dimensions to Spongephanes' character, while the revenge storyline pushes the horror elements further than previous versions. V3 ties together multiple narrative threads — the core Spongephanes-vs-SpongeWarrior conflict, the expanded ally roster, and the darker psychological horror elements — into the most complex arc yet.
Spongephanes doesn't work alone — he's surrounded by a loose network of corrupted Bikini Bottom residents who serve his "underwater game." Jose Juan functions as one of his closest allies, encountered during deeper-water sequences. Bob el Triste operates more independently, driven by grief and a deal that pulled him into "Underguater Limbo," but still exists within Spongephanes' sphere of influence. These allies aren't just random monsters — each has their own backstory and reason for being pulled into the chaos, whether through deals, transformations, or direct corruption by Spongephanes' power.
SpongeWarrior serves as the prophesied hero meant to stop Spongephanes, functioning as the player-aligned protagonist in the earliest encounters. The story frames SpongeWarrior as the one character who can challenge Spongephanes' god-complex, though the mod spends more time on the antagonists and their allies than on developing SpongeWarrior as a character. The prophecy angle gives the musical battles narrative weight — these aren't just random rap battles, they're part of a larger cosmic confrontation between SpongeWarrior and Spongephanes' underwater game.
Most of the mod's cast consists of twisted takes on familiar Bikini Bottom archetypes. Squidwirdy plays a reactive, dread-filled role during Spongebud Squareguy's confrontation in "Sunderwater." Mr. Ketchup emerges from a hallucination-inducing incident, while Mermaid Bob represents a superhero-parody transformation. These characters aren't just reskins — each represents a different facet of the mod's horror-parody approach, taking recognizable SpongeBob tropes and pushing them into unsettling territory. The corruption isn't uniform: some characters were transformed through deals (like Bob el Triste), others through hallucinogenic incidents, and others through direct confrontation with Spongephanes' power. This variety keeps the roster feeling distinct rather than repetitive.
Bikini Horrors walks a specific line between genuine horror atmosphere and self-aware comedy. The mod takes the SpongeBob formula — upbeat setting, recognizable characters, silly premises — and twists it into something unsettling, but never loses sight of the fact that it's fundamentally a parody. Spongephanes' god-complex and performance-art approach to confrontation keeps things from getting too grim, even when the story dives into hallucination sequences and revenge-driven subplots. The tone borrows from how the original SpongeBob show could shift from absurdist comedy to genuinely weird or unsettling moments, then snap back to humor.
The mod exists within the broader FNF horror mod ecosystem that includes Sonic.EXE, Mario's Madness, and Hypno's Lullaby. Like those mods, Bikini Horrors takes a beloved cartoon franchise and reimagines it through a horror lens, but it leans harder into the parody angle than most. Where Sonic.EXE plays its horror relatively straight, Bikini Horrors keeps one foot in comedy — Spongephanes isn't trying to be genuinely terrifying in the same way Sonic.EXE is. The mod acknowledges its place in that lineage while carving out its own identity through the SpongeBob parody angle and the musical-showdown format that defines FNF itself.
The mod was created by ChezzarCat, who handles composition and development. The mod has grown across multiple versions with an expanding cast and story.
No — Bikini Horrors is a standalone parody that uses SpongeBob-inspired characters and settings but isn't connected to the official SpongeBob SquarePants canon. The characters are twisted takes on the originals, not direct adaptations.
The main cast includes 9+ characters tied to released songs, including Spongephanes, SpongeWarrior, Spongelord, Spongebud Squareguy, Squidwirdy, Jose Juan, Bob el Triste, Mr. Ketchup, and Mermaid Bob. The full roster keeps growing with each update.
It's Spanish for "pool party," which frames the V3 arc. The title reflects the brighter surface setting of V3, though the underlying story adds darker pirate, hallucination, and revenge subplots.
It leans more into unsettling horror-parody than genuine terror. The mod takes recognizable SpongeBob tropes and pushes them into strange territory, but the comedy and self-aware tone keep it from being genuinely frightening. Think "weird and off-kilter" rather than "jump-scare horror."
Unlike mods like Sonic.EXE that play their horror relatively straight, Bikini Horrors balances horror atmosphere with comedy and parody. It exists in the same ecosystem as Mario's Madness and Hypno's Lullaby but leans harder into the absurdist comedy angle while still delivering unsettling moments.
The Funkipedia Mods Wiki maintains the most comprehensive reference for Bikini Horrors, including exhaustive trivia, sprite credits, minor characters, and dialogue transcripts beyond what's covered here.
The mod's roster continues to expand with each version update. For information on hidden characters, variants, and minor appearances, the Funkipedia Mods reference page tracks the complete character index.
Every Bikini Horrors FNF character — role, arc, and which songs they appear in — organized in one place.
Browse the full character list →The Funkipedia Mods Wiki covers exhaustive trivia, sprite credits, and minor characters beyond our scope here.
Open the Funkipedia Mods reference →