The Ultimate Collab AU

**The Ultimate Collab AU,** or simply known as **TUCAU**, is an AU created on the Undertale AUs Wiki, initially created by RainbowChalkSiamese. This AU was created as an experiment to see what the other members of this wiki are like.

## Rules

1. Anyone can add anything to this page, but only one character/location/theme per day. The host of this collab is including herself in this rule, as she is only placing rules and the basic description of the AU on Day 1.
2. The AU must be the basic switch-up/crossover format (one character/location taking the role of another)
3. You may add any fictional character, celebrity, YouTuber, SoundCloud user, AU character, or Wiki Contributor to the list of characters
4. NO NSFW!!!!!!
5. Be creative! The character doesn't have to be a carbon-copy of the character they replace!

## Character Changes

* Gir (Invader Zim) takes the role of Frisk
* Mimi (Invader Zim) takes the role of Chara
* Joltik (Pokemon) takes the role of Flowey
* RainbowChalkSiamese takes the role of Toriel
* 1st Prize (Baldi's Basics in Education and Learning) takes the role of Froggit
* The Boat (Just Shapes and Beats) takes the role of Whimsun
* Red (Among Us) takes the role of Loox
* Fran Bow (Fran Bow) takes the role of Napstablook
* Turnip Boy (Turnip Boy Commits Tax Evasion) takes the role of Vegetoid
* Pinkie Pie (My Little Pony) takes the role of Sans
* Charlotte (Making Fiends) takes the role of Papyrus
* Dr. Trayaurus, a character from some of DanTDMs earlier videos, takes the role of Snowdrake.
* DanTDM (YouTube) takes the role of Chilldrake.
* Bubs (Homestar Runner) takes the role of Grillby
* Strong Bad (Homestar Runner) takes the role of Doggo
* Jumba and Pleakley (Lilo and Stitch) take the role of Dogamy and Dogaressa
* Sergeant John Captain (Tankmen/Friday Night Funkin') takes the role of Lesser Dog
* Lesser Dog (Undertale) takes the role of Greater Dog
* The mascot of Reddit takes the role of the Politics Bear.
* Arts and Crafters (Baldi's Basics in Education and Learning) takes the role of River Person
* Homestar Runner takes the role of Monster Kid
* Almighty Tallest Red (Invader Zim) takes the role of Undyne
* Almighty Tallest Purple (Invader Zim) takes the role of Alphys
* Retsuko (Aggretsuko) takes the role of Mettaton
* Blazion (Yo-kai Watch) takes the role of Pyrope
* Hanazuki (Hanazuki: Full of Treasures) takes the role of Muffet
* Mayor Onion (Turnip Boy Commits Tax Evasion) takes the role of Parsnik
* Snap (ChalkZone) takes the role of Asgore
* Unikitty (Unikitty!) takes the role of Asriel
* Bipper (Gravity Falls/Bad End Friends) takes the role of W.D. Gaster
* Monster, Senpai, Spirit, Daddy Dearest and Mommy Mearest (Friday Night Funkin') take the role of The Gaster Followers
* Zim (Invader Zim) take the role of The Annoying Dog
* Kat (Kid vs. Kat) takes the role of Mad Dummy
* Vendetta (Making Fiends) takes the role of Mad Mew Mew
* Chikn Nuggit takes the role of Temmie
* Cheezborger (Chikn Nuggit) takes the role of Bob
* Iscream (Chikn Nuggit) takes the role of Ragel
* Slushi, Fwench Fwy and Sody Pop (Chikn Nuggit) take the role of Other Temmies
* Steve (Tankmen) takes the role of So Sorry
* Cloudy Copter (Baldi's Basics in Education and Learning) takes the role of Vulkin
* Insomni & Smogmella (Yo-kai Watch) take the role of Bratty and Catty.
* Helicopter (Just Shapes and Beats) takes the role of Whimsalot
* Warped Lamp (Pizza Game) takes the role of Glyde
* Sensei (Pizza Game) takes the role of Onionsan
* Coach Z (Homestar Runner) takes the role of Nice Cream Guy
* Skittles (Tankmen) takes the role of Burgerpants
* White (Among Us) takes the role of Astigmatism
* Gotta Sweep (Baldi's Basics in Education and Learning) takes the role of Madjick
* Shepherd (Joel G's ENA) takes the role of So Sorry
* Ena and Moony (Joel G's ENA) take the role of Royal Guard 01 and Royal Guard 02
* Skid, Pump, Boyfriend, Girlfriend and Pico (Pico's School/Spooky Month/Friday Night Funkin') take the role of The Amalgamates
	+ However, Because Skid and Pump are fought together, Snowdrake's Mom is replaced by MOTHER (Pizza Game)

### Human Souls

* Isabelle (Animal Crossing) is the soul of Integrity
* Rayman is the soul of Bravery
* Fluttershy (My Little Pony) is the soul of Kindness
* Ellie Rose (Henry Stickmin series) is the soul of Justice
* Charles Calvin (Henry Stickmin series) is the soul of Patience
* Henry Stickmin is the soul of Perseverance

## Location Changes

* The Skeld (Among Us) replaces the Ruins.
* Planet Irk (Invader Zim) replaces Home.
* Free Country, USA (Homestar Runner) replaces Snowdin
* Starlight Isles (TS!Underswap) replaces Waterfall
* Stow-On-Side (Pokemon) replaces Hotlands
* The Massive (Invader Zim) replaces the Laboratory
* Nugget Cave (Kindergarten) replaces the True Lab
* The Airship (Henry Stickmin/Among Us) replaces MTT Resort
* MIRA HQ (Among Us) replaces CORE
* Polus (Among Us) replaces New Home
* The Avatar of Irregularity (Toilet in Wonderland) replaces the Barrier

## Themes

* What The Hell Happened Here? (Once Upon A Time)
* Not Again! (Menu)
* Sparking A Friendship (Your Best Friend)
* Fear After The Fall (Fallen Down)
* The Skeld (Ruins)
* Make Your Move (Anticipation)
* Incoming Project (Enemy Approaching)
* Fran Battle (Ghost Fight)
* Chalkcrack (Heartache)
* Hilaaaaarious Hijinks! (sans.)
* Teehee~! (Nyeh Heh Heh!)
* Underwhelming Dogsong (Dogsong)
* Fiend Attack (Bonetrousle)
* Red (Undyne)
* Starlight Isles (Waterfall)
* Kat! (Dummy!)
* Jsut call me SESNEI! (Original, plays when talking to Sensei)
* Chikn Nuggit's Town (Temmie Village)
* Chikn Nuggit's Shop (Tem Shop)
* GRRRR!! (NGAHHH!!)
* Irken Spear of Doom (Spear of Justice)
* Purple (Alphys)
* HELL YEAAAAAAAH! (It's Showtime!)
* Crushing Death Metal (Metal Crusher)
* Moonflower Dance (Spider Dance)
* Oh! My Best Friend (Oh! One True Love)
* Oh! Cavern (Oh! Dungeon)
* Death by Karaoke (Death by Glamour)
* In the Nugget Cave (Here We Are)
* Funkin' with Faded Memories (Amalgam)
* How Unfortunate... (It's So Cold)
* The Unsure Leader (Bergentrückung)
* SNAP (ASGORE)
* Sparking A Nightmare (Your Best Nightmare)
* Overcoming Arachnophobia (Finale)
* Bricks and Sparkles (Hopes and Dreams)
* Screaming Into The Void (Burn In Despair!)
* END This Madness (Save The World)
* The Happiness Within (His Theme)
* This World is Closed...Forever (Final Power)
* Song That May Play When You Plan A Party With Pinkie (Song That Might Play When You Fight Sans)
* Duel With The Almighty Tallest (Battle Against A True Hero)
* Death Metal Forever (Power of NEO)
* The Party's OVER (MEGALOVANIA)
* Sweet Dreams Are Made Of These (Good Night)
* Anthem of the Nightmare Realm (Gaster's Theme)