Aisha Tyler declined to return to her role as Sextina Aquafina due to personal issues. She was replaced by Daniele Gaither.
Sextina Aquafina is based on a woman that Raphael Bob-Waksberg and Lisa Hanawalt knew in high school. She was a fan of Sarah Lynn growing up and listened to her music. She says that she has sex for pleasure because she's a dolphin, which is true for real-life dolphins.