I've actually discussed this to great length with my former roommate in college. My supervillan ego is Red Herring, a dame in red Musketeer-like garb with a foppy hat and epee that leaves fish (but not shubberies) as a calling card and fights using/abusing logical fallacies.
I temporarily used it as my DJ name on my radio show.
I temporarily used it as my DJ name on my radio show.