The essence of what makes My Hero Academia special is the intense, drama-packed episodes and the many quirks of each hero and villain. Quirks are established powers that are awakened at a young age, and children around the world learn to develop those powers to either become a hero or villain. Some don't inherit any at all, and are labeled as "quirkless", living at the mercy of those with incredible skills to protect them from the villains that use their quirks for harm. In My Hero Academia, there are many types of quirks: Accumulation-Type Quirks, Emitter Quirks, Mutation Quirks, and Transformation Quirks.