Max level = starting level + 25; 15 from food, 10 from friendship. I have at least 10 sidekicks maxed out so far. I really wanted all the princesses in Elsa's tiara. Still working on Mulan and Jasmine, who I only recently unlocked.
@BakedRaven That info really helps me out. Thank you! Can you tell when a level maxes out so you don't feed the sidekick some food that would be useless to them?
@InfinityApprentice You know that bar underneath each stat that fills up as that stat increases? It will be permanently full when that stat is maxed out.
Disney Infinity needs the glory of Cory. I love collecting stuff.