BeanieC10
I was fighting Benny in HC and summoned 2 Ill Foe. At the end of the fight i got 70% bonus exp instead of 50% (6 man team). On the next fight I tested it with 5 Night Friends out and only got 50% again. After the cave I tested again against a single Kilrog in the Barrens with 2 Ill Foe out and got 70% bonus exp again. Tested again with Night Friends in the Barrens and was back to 50% Seems that the bonus exp is only triggered by Ill Foes and not by other summoned monsters and isn't specific to being inside or outside of a cave.