When Jane and John first meet their first words to each other are "Hi" and "Hi" respectively. They call their supervisor "Hihi" after each initial interview where the computer greets them with "Hihi" instead of a standard greeting.
Phoebe Waller-Bridge worked in the production for about six months, writing and producing (she was also set to star as Jane) before exiting the project due to creative differences.
The series was described by Simon Kinberg as a "Married with Children" with guns.