- Out of Order: "Plague of Madness", chronologically the 7th episode, first aired on the 1st of April 2020, whereas "Scent of Prey", chronologically the 6th, first aired on the 6th of October the same year.
- What Could Have Been: Genndy Tartakovsky's original pitch for the show was a more child-friendly series about a caveboy and his dinosaur friend going on various adventures. However, after dabbling in more explicit violence with the final season of Samurai Jack, he decided to do another animated action series for adults and retooled it into the complete opposite of his original idea.
- The Wiki Rule: Primal 2019
Trivia / Primal (2019)