Timmy and Ember face each other on the train; both are voiced by Tara Strong.
Lynn, who on her show is voiced by Jessica Dicicco, was in her family’s car trying to catch a fly.
Lola calling Sam "Vampire Catwoman" references how all of them are Grey Delisle characters. Jenny then brings up the events of her being sent to preschool after stopping Lana and Lola from fighting. Their VA, who is also Delisle, played the teacher and the "She said the S-Word!" student in that episode.
Plankton names his giant Jellyfish (who is a possessed fairy) Lawrence.
In Part II, Leni questions why Lori would call her boyfriend Bobby "num nums".
Squidward and Professor Membrane have an intellectual conversation at one point in 2; both characters are voiced by Rodger Bumpass.
Development Gag: The superhero scene in chapter 2 was an homage to an idea for a superhero one shot.
