Eugene is keeping track of more than just baby Coco's length percentiles and diaper changes. According to one of his charts, the baby averages 15 tantrums and 42 smiles a week.
In order to avoid potential leaks and spoilers from fans and/or paparazzi, the episodes of this season are being filmed out of order.
The conversation between Luke and Eugene concerning 'radiation from space' is a fun callback to the scene in George Romero's original Night of the Living Dead where radiation from a crashed Venus probe is mentioned as a possible cause of the undead outbreak.
Angel Theory (Kelly) is deaf in one ear and is losing her hearing in the other one. Angela Kang asked if she could write in her real life struggle into the show because eventually she might become deaf. The line Connie says to her "it's a damn superpower " is what Angel's mother told her in real life
Cassady McClincy, who plays Lydia, was nervous about how her Bo staff training would come across on the show. "I hope it looks cool but I feel like I look like my grandpa... he's very clumsy."