Since Jackson Robert Scott filmed this movie in-between It (2017) and It - Capitolo due (2019), he appeared in three horror movies in a row.
Miles has Heterochromia, a difference in coloration between both eyes (in Miles' case, his right eye is hazel and his left eye is blue).
The name Miles Blume was inspired by the names of the enigmatic children in Suspense (1961): Miles and Flora. Blume being the German and Austrian word for flower.
This was the first horror movie released in 2019 featuring Jackson Robert Scott. The second was It - Capitolo due (2019).
Miles was born on August 22, 2010. August 22 also happens to be the birthday of Colm Feore who plays Arthur Jacobson.