Voice by Jack Mercer, the Professor is a technological supergenius — and mad scientist! — who lives in a high tech observatory that doubles as his home (and later as a home for his nephew Poindexter as well). Apparently, long ago he used to be a respected and even well-liked professor of chemistry, with the Master Cylinder as a pupil of his at one time.
Prior to the begining of the series, the Professor used to specialize in particularly bizarre and useless inventions. By the age of nine months, he had read over a thousand educational books, which enabled him to create his first device : a stink bomb potent enough that his parents had to move in shame to Mexico the next day. At the age of eight years old, he created his first (unsuccessful) moon rocket, though he was later successful at creating interplanetary vehicles. Some of his later inventions include a device to turn diamonds into jelly beans, a flying device to turn cats temporarily into an inky liquid that can be held by enormous eye droppers, a magnet that attracts organic life instead of ferro-metals, a formula that turned a starfish into a human-sized monster, and an electronic brainwasher, as well as innumerable rockets and robots. (Oddly enough, the Professor’s most well known robots resemble his frequent lackey, Rock Bottom.)
His contented mad scientist life was upended when he encountered Felix’s magic bag. Unable to handle the existence of magic, he became obsessed with owning that magic bag to discover its secrets. This obsession intensified the Professor’s natural tendencies towards greed and malicious mischief, until simply obtaining money or creating chaos became more important to him than the bag — and, always, the person opposing his schemes was Felix the Cat.
When his nephew Poindexter became friends with Felix, and when he discovered that he could hire Felix as a babysitter without ever actually getting around to paying him, the Professor became something of an occasional ally of Felix, particularly when they needed to team up against the Master Cylinder. Since then, the Professor has been more of a “friendly” adversary than an outright villain in the series.