Unlike other Daemons, Jex does not have unique attack skills of his own. Instead, unlocking nodes in his skill tree grants him access to the skills of other Daemons. He is also able to use up to eight attack skills, organized in two sets of four, and switching between these two sets during battle by using his "Skill Shift" Daemon action.
Jex first two Deamon Lores is a reference to other RPG titles created by Tokyo RPG Factory: "I am Setsuna" and "Lost Sphear".
- The end credits list Jex's voice actor as "????".