BLUE FREDDY:
It would be awesome to add this blue Freddy with a knife in Adventure style. He could be not only a playable character, but also an enemy from a certain world. His main attacks would revolve around knives, like throwing a wave of them.

The Phone Guy:
The UCN phone could be added as a playable character. Its model could be a blue phone with robotic arms and legs, as if it were a Phone animatronic.

His main attacks would be:

• Distraction: The FNaF phone call would play at full volume, stunning the enemies temporarily.

• Interference: A huge musical note would appear, dealing massive damage to all enemies. It would come with a loud noise similar to Golden Freddy’s FNaF 1 jumpscare (similar to the Power Song note, combined with Bash Jam’s attack style).

• Disable: There is a 10% chance to completely disable an enemy, leaving them tangled in the phone cord while being forced to listen to a random call from FNAF 3. Permanently

Love Taste Toy Chica:
Toy Chica is the only animatronic that could have this... curious skin. Her attacks could be the same as regular Toy Chica’s, or she could have different ones and be a full Healer. (I’m not going to talk more about this character.)

Scraptrap Jimmy Neutron:
It would be perfect for Scraptrap to have a Jimmy Neutron skin. His attacks could be references to the show.

Mewing Toy Freddy:
Beauty personified, the pinnacle of all forms of art. Perfection turned into animatronics, showing off his flawless mewing. He could be a Boss—very strong and resistant thanks to his beautiful metallic face. He might even be a secret boss in some hidden area.

Rogelio:
If you know GG Games, this character will feel familiar. It’s literally a giant cardboard head of SpringBonnie, named Rogelio. This distinctive character could be a Boss. His attacks would include:

• A Fish: He spits out a big fish from his mouth that attacks all allies.

• LEMIME: This boss would be the first one able to heal himself with this attack. He drinks a lemon soda called LEMIME to regenerate health over time.

• Omega Bite: A powerful, venomous bite that damages all allies and inflicts a purple poison effect.

39 The Bunny:
This character could be added as a Bonnie skin. He comes from a fangame called Five Nights With 39, a pretty funny parody fangame.
His attacks would include:

• Guard: Protects all allies with a shield that grants immunity for a few seconds.

• Drain: Drains energy from all enemies and gives it to the allies.

• Attack: Literally a basic Pokémon-like attack—a strong blow that releases a flash damaging multiple enemies.

FNaF 1 Remake Animatronics:
Add all the characters from the horror fangame FNaF 1 Remake in Adventure style. This fangame is like a “virus” version of the original FNaF 1 characters, making them much more terrifying. They could be enemies in a darker area like a mine or something similar to FNaF World’s area 5.
In this fangame, you can find: Fun Bear, Bonny, Chick, Oxy, Special, Buddy, and Saviour.

Totem Bonnie / Totem Panic:
A funny Bonnie totem could be a skin for some enemy or a sort of evolution (or MUTATION) of Bonnie, for example. It could also perfectly work as a Boss or even a playable character. It comes from Freddy in Space 2.

I think these 15 characters would be great additions to the game—even if they’re just memes, hehe. (or only someones).