The bar sequence has more shots than any sequence ever produced in stop-motion.
This movie takes place around 1886, as evidenced by the Statue of Liberty being nearly completed in New York Harbor.
While Sir Lionel Frost (Hugh Jackman) is searching in his drawers for the casting of the Sasquatch footprint, Kubo's monkey figurine from Kubo and the Two Strings (2016) can briefly be seen.
This is the first Laika movie to feature an all-adult cast. In the previous four movies, children performed the lead roles.