The voice of Flowey was inspired by an improvisation Dexter Manning did for Asriel when he was streaming UNDERTALE.
The jokes about Frisk being hungry reflects Dexter Manning's eating habits at the time.
Monster Kid's model is Scraggy from the Pokémon series.
Fans believe Sans has an Irish or Scottish accent, but it is actually an English Birmingham accent.
The show was originally only going to be 10 episodes.
