These are the most useful and powerful heroes that have gotten refreshes. They are recommended for all gameplay, especially arena and colosseum. Their reccomend disks will also be listed below.
1: Kristoff and Sven(Ki)
2: Judy Hoppes(Bo)
3: Miguel Rivera(Je)
4: Baymax(Ol)
5: Cinderella(Fa)
6: Darkwing Duck(Ni)
7: Shank(Va)
8: Maui (Either)