begging you pardon in advance for the rant that follows...
Mad Scientist? Lord Valve?
I'm sorry, but you don't get to pick your own nickname. A nickname is assigned to you by your alleged friends after you do something stupid or when they're too stupid/drunk to remember your name. It should be short, easy to remember, and by all means not flattering.
A simple litmus test: Would your nickname work in the film Animal House?