- The protagonist Norman has a total of 8,800 faces with different expressions and matching eyebrows and mouths. This means that the different combinations of these faces, eyebrows, and mouth can produce 1.5 million independent and different expressions for Norman.
- In Norman's iconic hair, there are a total of 275 steel nails. The materials used to make Norman hair include wool, hot glue, super glue, animal fur and hair gel.
- Norman encountered the whispering ghost scene in the bathroom, and it took the crew a year to complete the filming.
- The T-shirt that Norman wore was tailor-made for Norman, and it took 102 stitches to sew it out. Among them, 48 stitches were sewn on the neckline.
- Chris Butler really wanted to make a movie of his own style, so he created the script of "The Psychic Boy Norman". This script is very short, only 30 pages, with a lot of stylized shots and scenes. When making "Mother Ghost", Chris Butler took out the script, and everyone in the company liked it very much, so he decided to collaborate with Sam Phil to produce the film.
ParaNorman behind the scenes gags
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Perry Babcock: This is where it stops! It's one thing being a mental case in front of your family, but not the whole freaking town! There's not gonna be any more talking to ghosts, or grandmas, or, or... what is it now?
Sandra Babcock: I think it's trees.
Perry Babcock: You're grounded! You hear me?
Norman Babcock: This is ridiculous. I wish everyone could see what I see! I didn't ask to be born this way!
Perry Babcock: [Perry mutters as he slams his door shut] Funny, neither did we.
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Sheriff Hooper: What do you think you're doing firing at civilians? That is for the police to do