Skill are unique to each Hero and each have their own benefit. You can view a Hero’s skills by tapping 'Heroes' in the right-hand menu, tapping a Hero, and then choosing the “Skills” tab.

Skills are unlocked with each new color of your Hero except Orange. These are unlocked by equipping Badges and Promoting.

Starting at Team level 8, you can level up your skills to make them more powerful by spending Hero Skill Points and Gold.