Evil Computer is an exact recolor of Computer. His body is white, the three LEDs are red, along with his face, representing his evil, and two gray buttons on his forehead. When he is "Evil Computer Supreme", he has four horns and a flat triangle on his head. Instead of three LEDs, he has six.
Evil Computer is usually mean, rude and evil, as he had kicked Computer over onto the floor, showing that he was a bully. He is also known to betray others, as he used all of his friends.