Dr. O is a villain in the Super Secret Secret Squirrel segment of the 2 Stupid Dogs series.
Secret Squirrel was at a disadvantage being blinded by total darkness. Morocco Mole had to help guide the way.
Secret Squirrel had trouble fighting the bat henchmen at first but he managed to use his ears to find where they are attacking. Secret Squirrel defeated Doctor O by blinding him with a light bulb which is the cartoon stereotype for getting an idea. Dr. O and his minions were beaten and arrested while his plans were foiled.
He is an evil genius and a criminal mastermind with plans to cover the world in darkness by using a satellite to block out the sun.