This is the Scarecrow from Batman. What I like about this character is how he wears an outfit that fits his alias, to make him appear more sinister. I could implement this into my boss, as it could have an alias, where it will wear a matching outfit.
If there is one villain that has tested Batman's sanity, it has been The Scarecrow. His potions and concoctions that bend the mind have brought Batman to his knees and has almost ended his life because of it. While he can not match Batman physically, he can destroy Batman anyways.