Another thing is that, if using descriptive adjectives/nouns, they don't need to relate directly to your powers. It can be more broad and apply to any number of people. Superman doesn't really describe anything about him (other than him being super and a man, which can be true for many). Think about what heroes and villains do. They get involved in dangerous situations. They save or terrorize. They are well-known, etc.
My current main is a true Empath. He's a doctor and he's willing to sacrifice himself for a cause. He's calm and sophisticated and always knows what to do in a situation. Think 007 with a medical Doctorate. My first choice for his name (Dr. Danger) wasn't taken, right before I5, which was unbelievable.
