Transforming actress Jade Quon into the alien took the makeup team four hours, none of the prosthetics were reusable, and new ones were constantly being made. The original plan was for Quon to get into makeup 12-15 times max, but it ended up being 30.
Jade Quon, who plays Jules, previously played an alien in Men in Black 2 (2002). She was one of the small creatures in Locker C18 in the train station.
Jade Quon, who plays Jules, has a career spanning more than two decades performing in film, with the majority of her appearances in stunt roles.
No CGI was used to create the alien. The prosthetic makeup department head, Josh Turi, and his team created a full-body creature made up of 11 individual prosthetics attached to actress Jade Quon's body. The design was conceived by Director Marc Turtletaub and writer Gavin Steckler with a look intended to be "genderless, angelic, and friendly".
The setting for Jules is a fictional town in Western Pennsylvania called Boonton, and it was filmed in Boonton New Jersey, a real town with the same name but in a different state.