Lucia the tailor was played by Karine Avakyan, the show's resident cutter/fitter and the woman who actually made the dress.
The smoothie that Nathaniel drinks was actually made of green apples and banana chunks. Although his character was supposed to be disgusted by it, Scott Michael Foster tweeted that it was "quite yummy."
Rachel Bloom used the labelmaker that's featured in the show to literally label each of the cast and crew members. For example, she gave Vincent Rodriguez III (Josh Chan) a label which read "I'm Asian" and Vella Lovell (Heather) one which read "Cat Lady."
Most of the songs in the show were written after the stories were developed - however, "Man Nap" was conceived first, and they tailored a storyline to fit the song.
Star Rachel Bloom and guest-star Seth Green previously worked together on Robot Chicken (2001). He was one of the show's creators, she was a staff writer and voice artist.