The Masked Mutant will make a surprise appearance in The Movie.
He'll turn out to be disguised as one of the Protagonists.- Jossed, The Masked Mutant does not appear as any one of the protagonists but Hannah is from "The Ghost Next Door"
Ryan Lee will play Zach and Hannah's platonic best friend
And he'll disappear halfway through the movie. Hannah is from the books too.
Either she's an original, non-Goosebumps creation that Stine made, or she's based on one of the monsters - possibly the dog-children from My Hairiest Adventure.- Considering she's Zach's next-door neighbor, she could be Hannah, the main character from book #10, The Ghost Next Door.
- Confirmed, she is the girl from "The Ghost Next Door"
Somebody will try to wish the Abominable Snowman back into the book
But they'll get Clarissa from Be Careful What You Wish For to do it and it'll screw up, causing the other monsters to be unleashed.- Jossed: Slappy is the one who unleashes all the monsters. R.L. Stine is the one who gets the Abominable Snowman in the book initially, but Slappy releases it again
Some of the monsters will be on the heroes' side.
Quite a few from the series are relatively non-malicious, and some books have supernatural entities as the protagonists(Ghost next Door, My Hairiest Adventure, How I Learned To Fly).- Jossed: All of the monsters appear to be after the main characters and the townspeople.
- Actually, confirmed. Hannah is technically one of Stine's monsters.
The Jack Black portrayed as Stine is an impostor.
Besides the whole "magic manuscripts" business and his fictional daughter, the real R.L Stine has been confirmed for a cameo. To elaborate, it could be he's the Masked Mutant, who can somehow cross into reality. He may have escaped from his book, usurped Stine's identity, taken on Hannah from Ghost Next Door as a "daughter" and eventually tricked Zach into unlocking the books so he could gather a monster army.- Jossed, R.L. Stine plays "Mr. Black" a drama teacher.
Some Hidden Villain manipulated Zach into finding the manuscripts.
- Jossed, he finds them when concerned for Hannah.
A similar thing happened with Rod Serling, with the recordings of his scripts containing the monstrosities (physical and moral) of his works.
- See the Twilight Zone episode "A World of His Own"
The Blob that Ate Everything isn't what Stine says it is.
When Stine, Hannah, and the other two run out the Funhouse, Stine mentions that it's "The Blob that Ate Everything". For hardcore fans of Goosebumps, The Blob that Ate Everything has a face, which leads fans to mention that the monster Stine faces, is Monsterblood. R. L. Stine isn't human.
With the real R. L. Stine making a cameo as "Mr. Black", it is theorized that Jack Black's Stein, is a written character, guarding the manuscripts in case the monsters from the manuscripts escape from them (and they do), and he can put them back.- Slappy hints to Stine at the theater, that he "created him, or is it the other way around?". Noting that Stine may have been written like the rest of the characters.
Came to mind after reading the segment above about The Blob That Ate Everything and the typewriter above, but the reason R. L. Stine can use the typewriter to create literal monsters is he isn't human. He's a humanoid being with supernatural powers that allow him to create his monsters, and the typewriter is disguised alien technology.
Stine's typewriter, is The Haunted Typewriter
The plot in itself is not only related to "The Blob that Ate Everything", but is also related to the intro sequence in the show that shows Stine's manuscript pages flying out of the suitcase and bringing all the fictional stories to life. Meaning that this entire plot is related to Goosebumps. The Sequel will have a child with similar powers to Stine's
They'll be bullied and alone like Stine was, but they'll find solace in the Goosebumps books. They'll be able to bring the monsters out of the books, no manuscript or typewriter required, and control them to send them against their enemies.- Jossed.
Hannah wasn't the only character Stine allowed to stay in the real world
Considering how quite a few of the monsters(and non-human protagonists) were portrayed in a sympathetic light, and how many are missing from Slappy's mob, they may be living in secret across the country with Stine keeping watch on them. Some of them might be laying low out of fear (The Beasts, Plant-Brewer), respect (The Masked Mutant, Clarissa,) or because they look up to him like a father, similar to Slappy and Hannah (Erin and Marty, The Sadler ghosts, Della, Keith).- Confirmed in a way. Stine accidentally left the Invisible Boy out of the new story. He and Hannah are the only confirmed monsters to still be in the real world.
The Masked Mutant will be the Big Bad of the sequel.
- Jossed.
Curly the Skeleton will appear in the sequel.
- Jossed.
Horrorland will be the setting for the sequel.
- Jossed, the title of the film is "Goosebumps 2: Haunted Halloween".
The Hannah from the end of the movie is the Masked Mutant.
- Jossed.
Heroes from the books will come out to help fight the villains in the sequel.
- Sadly Jossed.
Actors from the TV series will appear as themselves to help fight the villains in the sequel.
Similar to "Wes Craven's New Nightmare", stars from the TV series (e.g. Ryan Gosling, Hayden Christensen, Corey Sevier, etc.) will appear as fictionalized versions of themselves, and will be granted special powers to fight the villains, similar to "The Dream Warriors" or "The Dream Master".- Bonus Guess: Some of them will gain powers similar to their characters (e.g. Dan Warry-Smith, who played Skipper Matthews in "Attack of the Mutant", will become the Colossal Elastic Boy).
- Jossed.
Slappy will be Demoted to Dragon in the sequel.
- Jossed, he's the Big Bad just like he was in the first movie.
The Universal Remote Control will appear in the sequel.
- Jossed.
The Evil Camera will appear in the sequel.
- Jossed.
Stine and Aunt Lorraine will have broken up by the sequel.
Given that Hannah is more or less Stine's adopted daughter and Zach is related to Aunt Lorraine, having the two of them stay together would either force Zach and Hannah to break up or create unfortunate "kissing cousins" vibes. Stine used luminous ink when he typed up the original manuscript for "The Ghost Next Door".
That's why, when Hannah is pulled into the new book at the end, she turns into a cascade of ghostly sparks rather than a torrent of black ink.