Callixido Ryss first appeared in the 2018 film Solo: A Star Wars Story and was later identified in the reference book Solo: A Star Wars Story The Official Guide written by Pablo Hidalgo. He was portrayed by .
- Solo: A Star Wars Story The Official Guide
- Star Wars: Scum and Villainy: Case Files on the Galaxy's Most Notorious
- Star Wars: Dawn of Rebellion: The Visual Guide
- "A Certain Point of View" — Star Wars Insider 224