What is a good secret identity name?

I have a character in a story who is appearing out of nowhere and taking over different bases of an enemy but everytime he does he never once killed someone and uses incredible strategical skills to get a whole group of his best friends who are completely clueless of his identity because of his mask, but because of his incredible skill and charisma his friends decide to leave the slowly deteriorating government for this new rebel. What would be a good name for this character and his orginization. Also the character is doing this out of revenge and avengement of his friends. And for the protection of those that remain. Please dont steal ideas and any answers would be appreciated thanks