UnderFNaF

UnderFNaF is a crossover AU between Five Nights at Freddy's, FNaF World, Sister Location, Freddy Fazbear's Pizzeria Simulator and Undertale. The AU is created by DeviantART User JustSimon23. The story follows the same idea as Undertale. Mt Ebbot is replaced by amusement park Animatronic World. It was built by unknown people seemingly for people to have fun with the animatronics. Most of the characters are a mix between their FNaF character and the Undertale character they replace.

Locations:
Ruins - Old Pizzeria

Snowdin - Ice-Land + Freeztown

Waterfall - Aquapaluza

Hotland - Spicy Valley

CORE - GENERATOR

Asgore's Castle - Fredbear's Family Diner

The Barrier - The Force Field

Characters:
Here is the list of characters's roles in the AU.
 * Frisk (The Protagonist/Player Character Role) - Gabe (FNaF 4 crying child from the minigames, in this AU they are named Krist.)
 * Flowey (The Empty One Role) - Ennard (in this AU he is a little toy clown.)
 * Toriel (The Caretaker Role) - Spring Bonnie (referred to as a she.)
 * Napstablook (The Recluse Role) - Endo-01 (Endoskeleton in backstage, in this AU he is a hologram instead of a ghost and he is named EndoBuddy.)
 * Sans (The Judge Role) - Springtrap. (in this AU he is an empty suit like in FNaF World but his design is based off of Core Series.)
 * Papyrus (The Ambitious Role) - Bonnie
 * Undyne (The Captain of the Guard Role) - Chica
 * Alphys (The Royal Scientist Role) - Mangle
 * Mettaton (The Celebrity Role) - Toy Bonnie (in this AU Bonnie is named Bon-Bon)
 * Asgore (The Monarch Role) - Fredbear
 * Asriel (The Soulless Angle Role) - Michael (in this AU he dark-purple kid animatronic.)
 * Chara (The Fallen Role) - Stephy (Pigtail Girl from FNaF 4 mini-games, in this AU she is named Mina.)

Minor roles:

 * Monster Kid (The Idoliser Role) - Balloon Boy (BB)
 * Nice Cream Guy (The Repetitive Vender Role) - Freddy Fazbear (instead of Nice Cream they sell CareDogs which are actually CorDogs.)
 * Doggo (The Blind Role) - Nightmare (FNaF 4 secret animatronic).
 * Lesser Dog - Plushtrap
 * Dogamy and Dogaressa - Nighmtare Bonnie and Nightmare Chica (in this AU they are named Robert and Sophie.)
 * Greater Dog - Nightamare Fredbear (with Fredbear Plush.)
 * Shyren - Toy Chica (in this AU they are named Chiki.)
 * Temmie (The Village Shop Role) - Mendo.
 * Royal Guard 1 and 2 - Shadow Freddy and Golden Freddy (not in love with each other.)
 * Muffet (The Outrageous Vender Role) - Lolbit (refered to as a she.)
 * Mad Dummy (The Enraged Role) - Endo-02 (hologram who can't fuse with an animatronic body, in this AU they are named Angry Endo.)
 * Grillby (The Restaurant Owner Role) - White Rabbit (animatronic with an overfunctional cooldown system.)
 * Bratty and Catty (The Trash Venders Role) - DeeDee (Bratty) and JJ (Catty)
 * Burgerpants (The Oppressed Vender Role) - Toy Freddy (in this AU he is named Frederick.)
 * River Person - Desk Man (who is actually Henry, in this AU he is named Ferryman of the Desk and uses his desk as a boat.)
 * Annoying Dog - Animdude (Scott's Avatar.)
 * Red (EXTRA ROLE) - Coffee (The Desolate Hope and FNaF World Update 2.)
 * WingDings Gaster - RWQFSFASXC.
 * Dummy - Golden Freddy Dummy (FNaF 3)

Trivia:

 * There are many secret fights in all routes.
 * The traits of the six souls are a little different.
 * UnderFNaF Frisk changes his appearance in the genocide route.