Who is the costume worth giving to?

[Guvnor]

Boost is the costume bonus.

Check the FAQs for more, specifically Question
12

Hero Costume FAQs! Please read for answers to most questions before posting new questions

FAQs for the Hero Costumes – V4, Updated per Version 29 changes FAQ’s have been updated again to reflect changes in experience gained by feeding duplicate costumes See Bottom of this Post for Log of Changes made to the FAQs Summary of the Questions

Click for list of questions

Q0 – where do I get costumes? Q0b – where do I get costume keys? Q1 – How to Equip/ Unequip/ Toggle a costume? Q2 – Levelling my costume? (its now at 1-1 again??) Q3 – All my XYZ heroes now have the costume? Q4 – Ch…