Jean Daguerre was the identical twin brother of Claude Daguerre. Both of them worked as henchmen for René Belloq. In 1933, the Daguerre Brothers caught Indiana Jones trying to break into the Forteresse Malevil in Marseilles, France to steal the Crystal Skull of Cozan. They roughed him up a bit, but Belloq told them to stop. Following Belloq's meeting with Franz Kroeger, Jones escaped despite the Daguerre Brothers' attempt to stop him.
- Indiana Jones and the Dinosaur Eggs (First appearance)