Professor Wikipedia

Wikipedia takes human form as a white-haired university professor teaching chemistry. His lecture starts reasonably but soon picks up editorial flourishes, and when students object to a date he simply adopts whatever correction they shout out, including one prankster's crude edit that he repeats as fact until someone cries vandalism. Questions about X-rays lead him into superhero and video-game lore, a vulgar request gets a straight-faced definition, and asked about his expertise he unrolls a list of every makeup artist from the original Star Wars trilogy. He tells one eager student that he isn't notable enough to discuss, then closes the class by asking for donations to keep it free. The students grumble, but are grateful they at least don't have Professor Britannica, a hopelessly outdated lecturer who is still predicting room-sized computers.