The original soundtrack contains cover versions of 1970's hits, while in the movie, contains the actual versions by their respective artists. For example, "Goodbye to Love" is performed by Phoebe Bridgers on the soundtrack, while in the movie, it is performed by The Carpenters.
When training on the poles, Stuart sits down and pulls out a lunch box. On the box is Scarlet Overkill, the antagonist in Minions (2015).
When the Minions are about to sleep with Gru because of the thunder, you can hear three Indonesian words. They are "Nasi Goreng" which means "Fried Rice", "Kecap Manis" which means "Sweet Soy Sauce" and "Terima Kasih" which translates to "Thank You". Pierre Coffin, who voices the minions, has an Indonesian mother.
This is the first Illumination theatrical release to be both a prequel and a sequel. It is a sequel to Minions (2015) and a prequel to Despicable Me (2010).